diff --git a/.github/workflows/run_pr_tests.yml b/.github/workflows/run_pr_tests.yml
index 60b7be7be..fd75fb55c 100644
--- a/.github/workflows/run_pr_tests.yml
+++ b/.github/workflows/run_pr_tests.yml
@@ -108,10 +108,6 @@ jobs:
           llvm_version: 16
           llvm_build_type: RelAssert
 
-      # installs clang-tidy
-      - name: setup-clang-tidy
-        run:
-          sudo apt-get install -y clang-tidy-12
 
       # These need to match the configurations of build_pr_cache to use the cache effectively
       - name: build initial config files
@@ -159,7 +155,7 @@ jobs:
               HEAD..origin/${{ github.base_ref }} | \
               grep -P '\.(c|cc|cxx|cpp|h|hh|hpp|hxx)$'` | \
             tee /dev/stderr | \
-            parallel --verbose -- clang-tidy-12 --quiet -p "$PWD/build/" "{}"
+            parallel --verbose -- clang-tidy-17 --quiet -p "$PWD/build/" "{}"
           # ^ When updating the clang-tidy version, the version used by the cmake
           # target should match updated c.f. the `tidy` target
 
@@ -174,11 +170,11 @@ jobs:
 
       - name: setup-ubuntu-clang-format
         run:
-          pip install clang-format==16.0.6
+          pip install clang-format==17.0.0
 
       - name: run clang-format
         run: |
-          # we've installed clang-format-16 in the docker via pip, which just installs it as clang-format,
+          # we've installed clang-format-17 in the docker via pip, which just installs it as clang-format,
           # so just use clang-format-diff and -b clang-format directly
           git fetch origin ${{ github.base_ref }}
           git diff -U0 --no-color origin/${{ github.base_ref }} | \
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8d550c14..0bf88afb7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -176,7 +176,7 @@ find_package(PythonInterp 3.6 REQUIRED)
 # When updating the version here, also update that used in the merge request
 # config
 find_package(ClangTools 16 COMPONENTS clang-format)
-find_package(ClangTools 12 COMPONENTS clang-tidy)
+find_package(ClangTools 15 COMPONENTS clang-tidy)
 if(TARGET ClangTools::clang-tidy)
   ca_option(CA_CLANG_TIDY_FLAGS STRING
     "Semi-color separated list of clang-tidy flags" "")