diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 577d7a265b..b5ce42f442 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -106,6 +106,7 @@ jobs:
         cd casadi
         mkdir build && cd build
         cmake .. \
+          -DCMAKE_C_COMPILER_LAUNCHER=ccache \
           -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
           -DCMAKE_BUILD_TYPE=Release \
           -DWITH_EXAMPLES=OFF