diff --git a/.github/workflows/central-publish.yml b/.github/workflows/central-publish.yml
index 4c5a660619..a5fcfaa4cb 100644
--- a/.github/workflows/central-publish.yml
+++ b/.github/workflows/central-publish.yml
@@ -32,7 +32,7 @@ jobs:
       - name: Create lib directory if not exists
         run: mkdir -p ballerina/lib
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.23.0
         with:
           scan-type: 'rootfs'
           scan-ref: '/github/workspace/ballerina/lib'
diff --git a/.github/workflows/publish-release.yml b/.github/workflows/publish-release.yml
index 9f37c1a406..19f290fe04 100644
--- a/.github/workflows/publish-release.yml
+++ b/.github/workflows/publish-release.yml
@@ -29,7 +29,7 @@ jobs:
       - name: Create lib directory if not exists
         run: mkdir -p ballerina/lib
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.23.0
         with:
           scan-type: 'rootfs'
           scan-ref: '/github/workspace/ballerina/lib'
diff --git a/.github/workflows/trivy-scan.yml b/.github/workflows/trivy-scan.yml
index 3e3b3389d3..7258d43e39 100644
--- a/.github/workflows/trivy-scan.yml
+++ b/.github/workflows/trivy-scan.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Create lib directory if not exists
         run: mkdir -p ballerina/lib
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@0.23.0
         with:
           scan-type: 'rootfs'
           scan-ref: '/github/workspace/ballerina/lib'
diff --git a/.trivyignore b/.trivyignore
index 2738392882..eadd990ef6 100644
--- a/.trivyignore
+++ b/.trivyignore
@@ -2,3 +2,4 @@ CVE-2024-34447
 CVE-2024-29857
 CVE-2024-30171
 CVE-2024-30172
+CVE-2024-7254
diff --git a/ballerina-tests/build.gradle b/ballerina-tests/build.gradle
index d75a062b1e..e8809cd3cc 100644
--- a/ballerina-tests/build.gradle
+++ b/ballerina-tests/build.gradle
@@ -244,7 +244,7 @@ task startLdapServer() {
             if (!stdOut.toString().contains("openldap-server")) {
                 println "Starting LDAP server."
                 exec {
-                    commandLine 'sh', '-c', "docker-compose -f $project.projectDir/resources/openldap/docker-compose.yml up -d"
+                    commandLine 'sh', '-c', "docker compose -f $project.projectDir/resources/openldap/compose.yml up -d"
                     standardOutput = stdOut
                 }
                 println stdOut.toString()
diff --git a/ballerina-tests/http-advanced-tests/Ballerina.toml b/ballerina-tests/http-advanced-tests/Ballerina.toml
index a7c5f8f4d5..8b7f453d76 100644
--- a/ballerina-tests/http-advanced-tests/Ballerina.toml
+++ b/ballerina-tests/http-advanced-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http_advanced_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http-advanced-tests/Dependencies.toml b/ballerina-tests/http-advanced-tests/Dependencies.toml
index 2316ae21b2..16139137af 100644
--- a/ballerina-tests/http-advanced-tests/Dependencies.toml
+++ b/ballerina-tests/http-advanced-tests/Dependencies.toml
@@ -73,7 +73,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -105,7 +105,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_advanced_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "crypto"},
 	{org = "ballerina", name = "file"},
@@ -125,7 +125,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/http-client-tests/Ballerina.toml b/ballerina-tests/http-client-tests/Ballerina.toml
index 71c912aa45..13df10c791 100644
--- a/ballerina-tests/http-client-tests/Ballerina.toml
+++ b/ballerina-tests/http-client-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http_client_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http-client-tests/Dependencies.toml b/ballerina-tests/http-client-tests/Dependencies.toml
index 301e1f2895..1c9014fec3 100644
--- a/ballerina-tests/http-client-tests/Dependencies.toml
+++ b/ballerina-tests/http-client-tests/Dependencies.toml
@@ -70,7 +70,7 @@ dependencies = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -102,7 +102,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_client_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "constraint"},
 	{org = "ballerina", name = "http"},
@@ -121,7 +121,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/http-dispatching-tests/Ballerina.toml b/ballerina-tests/http-dispatching-tests/Ballerina.toml
index f3000885bb..85211b034e 100644
--- a/ballerina-tests/http-dispatching-tests/Ballerina.toml
+++ b/ballerina-tests/http-dispatching-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http_dispatching_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http-dispatching-tests/Dependencies.toml b/ballerina-tests/http-dispatching-tests/Dependencies.toml
index 70328cc437..5717f4cda7 100644
--- a/ballerina-tests/http-dispatching-tests/Dependencies.toml
+++ b/ballerina-tests/http-dispatching-tests/Dependencies.toml
@@ -67,7 +67,7 @@ dependencies = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -99,7 +99,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_dispatching_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "http"},
 	{org = "ballerina", name = "http_test_common"},
@@ -120,7 +120,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/http-interceptor-tests/Ballerina.toml b/ballerina-tests/http-interceptor-tests/Ballerina.toml
index abf3e73059..a66fe84f9b 100644
--- a/ballerina-tests/http-interceptor-tests/Ballerina.toml
+++ b/ballerina-tests/http-interceptor-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http_interceptor_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http-interceptor-tests/Dependencies.toml b/ballerina-tests/http-interceptor-tests/Dependencies.toml
index f5acd12594..3cc4d564d1 100644
--- a/ballerina-tests/http-interceptor-tests/Dependencies.toml
+++ b/ballerina-tests/http-interceptor-tests/Dependencies.toml
@@ -67,7 +67,7 @@ dependencies = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -99,7 +99,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_interceptor_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "http"},
 	{org = "ballerina", name = "http_test_common"},
@@ -115,7 +115,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/http-misc-tests/Ballerina.toml b/ballerina-tests/http-misc-tests/Ballerina.toml
index 3fdc9e4a98..f6f78a9aca 100644
--- a/ballerina-tests/http-misc-tests/Ballerina.toml
+++ b/ballerina-tests/http-misc-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http_misc_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http-misc-tests/Dependencies.toml b/ballerina-tests/http-misc-tests/Dependencies.toml
index 4cf0c8e24e..4c4f2b1df9 100644
--- a/ballerina-tests/http-misc-tests/Dependencies.toml
+++ b/ballerina-tests/http-misc-tests/Dependencies.toml
@@ -67,7 +67,7 @@ dependencies = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -99,7 +99,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_misc_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "http"},
 	{org = "ballerina", name = "http_test_common"},
@@ -118,7 +118,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/http-misc-tests/tests/http_header_test.bal b/ballerina-tests/http-misc-tests/tests/http_header_test.bal
index 308cd7b93a..31c5e1c1a1 100644
--- a/ballerina-tests/http-misc-tests/tests/http_header_test.bal
+++ b/ballerina-tests/http-misc-tests/tests/http_header_test.bal
@@ -14,6 +14,7 @@
 // specific language governing permissions and limitations
 // under the License.
 
+import ballerina/mime;
 import ballerina/test;
 import ballerina/http;
 import ballerina/http_test_common as common;
@@ -276,3 +277,24 @@ function testPassthruWithBody() returns error? {
     }
 }
 
+@test:Config {}
+function testAddHeaderWithContentType() returns error? {
+    http:Request req = new;
+    check req.setContentType(mime:APPLICATION_JSON);
+    test:assertEquals(check req.getHeaders(http:CONTENT_TYPE), [mime:APPLICATION_JSON]);
+    req.addHeader(http:CONTENT_TYPE, mime:APPLICATION_XML);
+    test:assertEquals(check req.getHeaders(http:CONTENT_TYPE), [mime:APPLICATION_XML]);
+
+    http:Response res = new;
+    check res.setContentType(mime:APPLICATION_JSON);
+    test:assertEquals(check res.getHeaders(http:CONTENT_TYPE), [mime:APPLICATION_JSON]);
+    res.addHeader(http:CONTENT_TYPE, mime:APPLICATION_XML);
+    test:assertEquals(check res.getHeaders(http:CONTENT_TYPE), [mime:APPLICATION_XML]);
+
+    http:PushPromise pushPromise = new;
+    pushPromise.addHeader(http:CONTENT_TYPE, mime:APPLICATION_JSON);
+    test:assertEquals(pushPromise.getHeaders(http:CONTENT_TYPE), [mime:APPLICATION_JSON]);
+    pushPromise.addHeader(http:CONTENT_TYPE, mime:APPLICATION_XML);
+    test:assertEquals(pushPromise.getHeaders(http:CONTENT_TYPE), [mime:APPLICATION_XML]);
+}
+
diff --git a/ballerina-tests/http-resiliency-tests/Ballerina.toml b/ballerina-tests/http-resiliency-tests/Ballerina.toml
index 36ed22faa3..4997843d0d 100644
--- a/ballerina-tests/http-resiliency-tests/Ballerina.toml
+++ b/ballerina-tests/http-resiliency-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http_resiliency_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http-resiliency-tests/Dependencies.toml b/ballerina-tests/http-resiliency-tests/Dependencies.toml
index 751080ceaa..9f2291536e 100644
--- a/ballerina-tests/http-resiliency-tests/Dependencies.toml
+++ b/ballerina-tests/http-resiliency-tests/Dependencies.toml
@@ -67,7 +67,7 @@ dependencies = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -99,7 +99,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_resiliency_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "http"},
 	{org = "ballerina", name = "http_test_common"},
@@ -116,7 +116,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/http-security-tests/Ballerina.toml b/ballerina-tests/http-security-tests/Ballerina.toml
index 40cfe94cf7..9c8bf50948 100644
--- a/ballerina-tests/http-security-tests/Ballerina.toml
+++ b/ballerina-tests/http-security-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http_security_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http-security-tests/Dependencies.toml b/ballerina-tests/http-security-tests/Dependencies.toml
index ae0136b7c1..98a4e56935 100644
--- a/ballerina-tests/http-security-tests/Dependencies.toml
+++ b/ballerina-tests/http-security-tests/Dependencies.toml
@@ -70,7 +70,7 @@ dependencies = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -102,7 +102,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_security_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "auth"},
 	{org = "ballerina", name = "http"},
@@ -121,7 +121,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/http-service-tests/Ballerina.toml b/ballerina-tests/http-service-tests/Ballerina.toml
index cddf3f178b..7eb13ca032 100644
--- a/ballerina-tests/http-service-tests/Ballerina.toml
+++ b/ballerina-tests/http-service-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http_service_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http-service-tests/Dependencies.toml b/ballerina-tests/http-service-tests/Dependencies.toml
index baabb6989a..7e504e7a0c 100644
--- a/ballerina-tests/http-service-tests/Dependencies.toml
+++ b/ballerina-tests/http-service-tests/Dependencies.toml
@@ -70,7 +70,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -102,7 +102,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_service_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "file"},
 	{org = "ballerina", name = "http"},
@@ -121,7 +121,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/http-test-common/Ballerina.toml b/ballerina-tests/http-test-common/Ballerina.toml
index 7e2c202651..ab8aabdf3e 100644
--- a/ballerina-tests/http-test-common/Ballerina.toml
+++ b/ballerina-tests/http-test-common/Ballerina.toml
@@ -1,4 +1,4 @@
 [package]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
diff --git a/ballerina-tests/http-test-common/Dependencies.toml b/ballerina-tests/http-test-common/Dependencies.toml
index 0b228cfb5f..c2b2ac93e1 100644
--- a/ballerina-tests/http-test-common/Dependencies.toml
+++ b/ballerina-tests/http-test-common/Dependencies.toml
@@ -10,7 +10,7 @@ distribution-version = "2201.5.0"
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
 	{org = "ballerina", name = "mime"},
diff --git a/ballerina-tests/http2-tests/Ballerina.toml b/ballerina-tests/http2-tests/Ballerina.toml
index c445e7eb53..880443707b 100644
--- a/ballerina-tests/http2-tests/Ballerina.toml
+++ b/ballerina-tests/http2-tests/Ballerina.toml
@@ -1,14 +1,14 @@
 [package]
 org = "ballerina"
 name = "http2_tests"
-version = "2.7.7"
+version = "2.7.8"
 
 [[dependency]]
 org = "ballerina"
 name = "http_test_common"
 repository = "local"
-version = "2.7.7"
+version = "2.7.8"
 
 [[platform.java11.dependency]]
 scope = "testOnly"
-path = "../../test-utils/build/libs/http-test-utils-2.7.7.jar"
+path = "../../test-utils/build/libs/http-test-utils-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina-tests/http2-tests/Dependencies.toml b/ballerina-tests/http2-tests/Dependencies.toml
index 88f72b7985..796de1c8fc 100644
--- a/ballerina-tests/http2-tests/Dependencies.toml
+++ b/ballerina-tests/http2-tests/Dependencies.toml
@@ -70,7 +70,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "auth"},
@@ -102,7 +102,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http2_tests"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "file"},
 	{org = "ballerina", name = "http"},
@@ -121,7 +121,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http_test_common"
-version = "2.7.7"
+version = "2.7.8"
 scope = "testOnly"
 dependencies = [
 	{org = "ballerina", name = "lang.string"},
diff --git a/ballerina-tests/resources/openldap/docker-compose.yml b/ballerina-tests/resources/openldap/compose.yml
similarity index 97%
rename from ballerina-tests/resources/openldap/docker-compose.yml
rename to ballerina-tests/resources/openldap/compose.yml
index 63d25ce840..23599088b2 100644
--- a/ballerina-tests/resources/openldap/docker-compose.yml
+++ b/ballerina-tests/resources/openldap/compose.yml
@@ -1,4 +1,3 @@
-version: '3.7'
 services:
     ldap_server:
         image: osixia/openldap:1.3.0
diff --git a/ballerina/Ballerina.toml b/ballerina/Ballerina.toml
index b05a5a0da4..eee5987756 100644
--- a/ballerina/Ballerina.toml
+++ b/ballerina/Ballerina.toml
@@ -1,7 +1,7 @@
 [package]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 authors = ["Ballerina"]
 keywords = ["http", "network", "service", "listener", "client"]
 repository = "https://github.com/ballerina-platform/module-ballerina-http"
@@ -12,8 +12,8 @@ distribution = "2201.5.0"
 [[platform.java11.dependency]]
 groupId = "io.ballerina.stdlib"
 artifactId = "http-native"
-version = "2.7.7"
-path = "../native/build/libs/http-native-2.7.7.jar"
+version = "2.7.8"
+path = "../native/build/libs/http-native-2.7.8-SNAPSHOT.jar"
 
 [[platform.java11.dependency]]
 groupId = "io.ballerina.stdlib"
diff --git a/ballerina/CompilerPlugin.toml b/ballerina/CompilerPlugin.toml
index dfb4ff467c..d7fb0e4e1d 100644
--- a/ballerina/CompilerPlugin.toml
+++ b/ballerina/CompilerPlugin.toml
@@ -3,4 +3,4 @@ id = "http-compiler-plugin"
 class = "io.ballerina.stdlib.http.compiler.HttpCompilerPlugin"
 
 [[dependency]]
-path = "../compiler-plugin/build/libs/http-compiler-plugin-2.7.7.jar"
+path = "../compiler-plugin/build/libs/http-compiler-plugin-2.7.8-SNAPSHOT.jar"
diff --git a/ballerina/Dependencies.toml b/ballerina/Dependencies.toml
index af294dedd5..a558f3c59f 100644
--- a/ballerina/Dependencies.toml
+++ b/ballerina/Dependencies.toml
@@ -51,7 +51,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "crypto"
-version = "2.3.0"
+version = "2.3.2"
 dependencies = [
 	{org = "ballerina", name = "jballerina.java"},
 	{org = "ballerina", name = "time"}
@@ -63,13 +63,11 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "file"
-version = "1.7.0"
+version = "1.7.1"
 dependencies = [
 	{org = "ballerina", name = "io"},
 	{org = "ballerina", name = "jballerina.java"},
-	{org = "ballerina", name = "log"},
 	{org = "ballerina", name = "os"},
-	{org = "ballerina", name = "regex"},
 	{org = "ballerina", name = "time"}
 ]
 modules = [
@@ -79,7 +77,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "http"
-version = "2.7.7"
+version = "2.7.8"
 dependencies = [
 	{org = "ballerina", name = "auth"},
 	{org = "ballerina", name = "cache"},
@@ -110,7 +108,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "io"
-version = "1.4.0"
+version = "1.4.1"
 dependencies = [
 	{org = "ballerina", name = "jballerina.java"},
 	{org = "ballerina", name = "lang.value"}
@@ -240,7 +238,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "log"
-version = "2.7.0"
+version = "2.7.1"
 dependencies = [
 	{org = "ballerina", name = "io"},
 	{org = "ballerina", name = "jballerina.java"},
@@ -254,7 +252,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "mime"
-version = "2.7.0"
+version = "2.7.1"
 dependencies = [
 	{org = "ballerina", name = "io"},
 	{org = "ballerina", name = "jballerina.java"},
@@ -304,7 +302,7 @@ dependencies = [
 [[package]]
 org = "ballerina"
 name = "regex"
-version = "1.4.0"
+version = "1.4.3"
 dependencies = [
 	{org = "ballerina", name = "jballerina.java"},
 	{org = "ballerina", name = "lang.string"}
@@ -316,7 +314,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "task"
-version = "2.3.1"
+version = "2.3.2"
 dependencies = [
 	{org = "ballerina", name = "jballerina.java"},
 	{org = "ballerina", name = "time"}
@@ -325,7 +323,7 @@ dependencies = [
 [[package]]
 org = "ballerina"
 name = "time"
-version = "2.2.4"
+version = "2.2.5"
 dependencies = [
 	{org = "ballerina", name = "jballerina.java"}
 ]
@@ -336,7 +334,7 @@ modules = [
 [[package]]
 org = "ballerina"
 name = "url"
-version = "2.2.3"
+version = "2.2.4"
 dependencies = [
 	{org = "ballerina", name = "jballerina.java"}
 ]
diff --git a/ballerina/http2_push_promise.bal b/ballerina/http2_push_promise.bal
index 1c0540faf4..795d441b03 100644
--- a/ballerina/http2_push_promise.bal
+++ b/ballerina/http2_push_promise.bal
@@ -59,11 +59,15 @@ public class PushPromise {
         return externPromiseGetHeaders(self, headerName);
     }
 
-    # Adds the specified key/value pair as an HTTP header to the `http:PushPromise`.
+    # Adds the specified key/value pair as an HTTP header to the `http:PushPromise`. In the case of the `Content-Type`
+    # header, the existing value is replaced with the specified value.
     #
     # + headerName - The header name
     # + headerValue - The header value
     public isolated function addHeader(string headerName, string headerValue) {
+        if headerName.equalsIgnoreCaseAscii(CONTENT_TYPE) {
+            return externPromiseSetHeader(self, headerName, headerValue);
+        }
         return externPromiseAddHeader(self, headerName, headerValue);
     }
 
diff --git a/ballerina/http_request.bal b/ballerina/http_request.bal
index 133efab91a..39f484df3a 100644
--- a/ballerina/http_request.bal
+++ b/ballerina/http_request.bal
@@ -165,12 +165,17 @@ public class Request {
         externRequestSetHeader(self, headerName, headerValue);
     }
 
-    # Adds the specified header to the request. Existing header values are not replaced. Panic if an illegal header is passed.
+    # Adds the specified header to the request. Existing header values are not replaced, except for the `Content-Type`
+    # header. In the case of the `Content-Type` header, the existing value is replaced with the specified value.
+    # Panic if an illegal header is passed.
     #
     # + headerName - The header name
     # + headerValue - The header value
     public isolated function addHeader(string headerName, string headerValue) {
-        externRequestAddHeader(self, headerName, headerValue);
+        if headerName.equalsIgnoreCaseAscii(CONTENT_TYPE) {
+            return externRequestSetHeader(self, headerName, headerValue);
+        }
+        return externRequestAddHeader(self, headerName, headerValue);
     }
 
     # Removes the specified header from the request.
diff --git a/ballerina/http_response.bal b/ballerina/http_response.bal
index 307f3d9a82..348bcee566 100644
--- a/ballerina/http_response.bal
+++ b/ballerina/http_response.bal
@@ -109,13 +109,18 @@ public class Response {
         return externResponseGetHeader(self, headerName, position);
     }
 
-    # Adds the specified header to the response. Existing header values are not replaced. Panic if an illegal header is passed.
+    # Adds the specified header to the response. Existing header values are not replaced, except for the `Content-Type`
+    # header. In the case of the `Content-Type` header, the existing value is replaced with the specified value.
+    #. Panic if an illegal header is passed.
     #
     # + headerName - The header name
     # + headerValue - The header value
     # + position - Represents the position of the header as an optional parameter. If the position is `http:TRAILING`,
     #              the entity-body of the `Response` must be accessed initially.
     public isolated function addHeader(string headerName, string headerValue, HeaderPosition position = LEADING) {
+        if headerName.equalsIgnoreCaseAscii(CONTENT_TYPE) {
+            return externResponseSetHeader(self, headerName, headerValue, position);
+        }
         return externResponseAddHeader(self, headerName, headerValue, position);
     }
 
diff --git a/changelog.md b/changelog.md
index 5cfbd93ad2..90f5243d27 100644
--- a/changelog.md
+++ b/changelog.md
@@ -5,6 +5,12 @@ This file contains all the notable changes done to the Ballerina HTTP package th
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to 
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- [Fix duplicating `Content-Type` header via the `addHeader` method](https://github.com/ballerina-platform/ballerina-library/issues/7268)
+
 ## [2.7.7] - 2024-05-29
 
 ### Fixed