diff --git a/.github/workflows/CI-unixish.yml b/.github/workflows/CI-unixish.yml
index 74100265..07ee9731 100644
--- a/.github/workflows/CI-unixish.yml
+++ b/.github/workflows/CI-unixish.yml
@@ -82,7 +82,7 @@ jobs:
 
     - name: Run CMake
       run: |
-        cmake -S . -B cmake.output -DCMAKE_COMPILE_WARNING_AS_ERROR=On
+        cmake -S . -B cmake.output -Werror=dev --warn-uninitialized -DCMAKE_COMPILE_WARNING_AS_ERROR=On
 
     - name: CMake simplecpp
       run: |
diff --git a/.github/workflows/CI-windows.yml b/.github/workflows/CI-windows.yml
index 7985995f..ccf208fa 100644
--- a/.github/workflows/CI-windows.yml
+++ b/.github/workflows/CI-windows.yml
@@ -45,7 +45,7 @@ jobs:
 
       - name: Run CMake
         run: |
-          cmake -G "Visual Studio 17 2022" -A x64 -DCMAKE_COMPILE_WARNING_AS_ERROR=On . || exit /b !errorlevel!
+          cmake -G "Visual Studio 17 2022" -A x64 -Werror=dev --warn-uninitialized -DCMAKE_COMPILE_WARNING_AS_ERROR=On . || exit /b !errorlevel!
 
       - name: Build
         run: |
diff --git a/.github/workflows/clang-tidy.yml b/.github/workflows/clang-tidy.yml
index 9ebb6683..8bc15d1a 100644
--- a/.github/workflows/clang-tidy.yml
+++ b/.github/workflows/clang-tidy.yml
@@ -42,7 +42,7 @@ jobs:
 
       - name: Prepare CMake
         run: |
-          cmake -S . -B cmake.output -G "Unix Makefiles" -DCMAKE_COMPILE_WARNING_AS_ERROR=On -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
+          cmake -S . -B cmake.output -Werror=dev --warn-uninitialized -DCMAKE_COMPILE_WARNING_AS_ERROR=On -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
         env:
           CXX: clang-20