diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 92aca9d0..053ccf9a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -250,8 +250,8 @@ jobs:
       - name: Configure
         run: >-
           cmake
-          -D CMAKE_C_FLAGS="-I/opt/homebrew/include -I/opt/homebrew/opt/flex/include"
-          -D CMAKE_EXE_LINKER_FLAGS="-L/opt/homebrew/Cellar -L/opt/homebew/opt/flex/lib"
+          -D CMAKE_C_FLAGS="-I/opt/homebrew/include"
+          -D CMAKE_EXE_LINKER_FLAGS="-L/opt/homebrew/Cellar"
           -D DEBUG_CMAKE=1
           -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
           -B build
@@ -314,8 +314,8 @@ jobs:
 
           mkdir _ambuild && cd _ambuild
 
-          CFLAGS="-I/opt/homebrew/include -I/opt/homebrew/opt/flex/include"
-          LDFLAGS="-L/opt/homebrew/lib    -L/opt/homebrew/opt/bison/lib"
+          CFLAGS="-I/opt/homebrew/include"
+          LDFLAGS="-L/opt/homebrew/lib"
           ../src/configure
           --enable-option-checking=fatal