diff --git a/.clang-tidy b/.clang-tidy
index ee49cf5a1..19e42e069 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -9,11 +9,11 @@ Checks:
   performance-*,
   -performance-avoid-endl
 '
-WarningsAsErrors:  ''
+WarningsAsErrors:  '*'
 HeaderFilterRegex: ''
 UseColor: true
 FormatStyle: 'file'
 CheckOptions:
-  - { key: modernize-use-nullptr.NullMacros, value: 'NULL' }
+  modernize-use-nullptr.NullMacros: 'NULL'
   # std::exception_ptr is a cheap to copy, pointer-like type; we pass it by value all the time.
-  - { key: performance-unnecessary-value-param.AllowedTypes, value: 'std::exception_ptr' }
+  performance-unnecessary-value-param.AllowedTypes: 'exception_ptr$;'
diff --git a/.github/workflows/clang_tidy.yml b/.github/workflows/clang_tidy.yml
index 82b4b4795..90405a471 100644
--- a/.github/workflows/clang_tidy.yml
+++ b/.github/workflows/clang_tidy.yml
@@ -17,10 +17,10 @@ jobs:
           # This LLVM script will add the relevant LLVM PPA: https://apt.llvm.org/
           wget https://apt.llvm.org/llvm.sh -O /tmp/llvm.sh
           chmod +x /tmp/llvm.sh
-          sudo /tmp/llvm.sh 18
-          sudo apt-get install -y clang-tidy-18
+          sudo /tmp/llvm.sh 19
+          sudo apt-get install -y clang-tidy-19
           rm /tmp/llvm.sh
-          clang-tidy-18 --version
+          clang-tidy-19 --version
 
       - name: Install bear
         run: |
@@ -62,4 +62,4 @@ jobs:
       - name: Run Clang Tidy
         working-directory: ice-demos/cpp
         run: |
-          find . -name "*.h" -o -name "*.cpp" | xargs run-clang-tidy-18 -j$(nproc) -quiet
+          run-clang-tidy-19 -j$(nproc) -quiet