diff --git a/.github/workflows/Build.yaml b/.github/workflows/Build.yaml
index 008b58ca0..1e367648b 100644
--- a/.github/workflows/Build.yaml
+++ b/.github/workflows/Build.yaml
@@ -91,7 +91,7 @@ jobs:
     - name: Install opengl and SDL
       run: |
         sudo apt-get update
-        sudo apt-get install -y libgl1-mesa-dev libsdl2-dev
+        sudo apt-get install -y libgl1-mesa-dev libglu1-mesa-dev libsdl2-dev
 
     - name: Download & Install premake
       working-directory: RecastDemo
@@ -123,7 +123,7 @@ jobs:
     - name: Install opengl and SDL
       run: |
         sudo apt-get update
-        sudo apt-get install -y libgl1-mesa-dev libsdl2-dev
+        sudo apt-get install -y libgl1-mesa-dev libglu1-mesa-dev libsdl2-dev
 
     - name: Configure CMake
       run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{matrix.conf}}
diff --git a/.github/workflows/Tests.yaml b/.github/workflows/Tests.yaml
index b0aef9916..648f23243 100644
--- a/.github/workflows/Tests.yaml
+++ b/.github/workflows/Tests.yaml
@@ -49,7 +49,7 @@ jobs:
     - name: Install opengl and SDL
       run: |
         sudo apt-get update
-        sudo apt-get install -y libgl1-mesa-dev libsdl2-dev
+        sudo apt-get install -y libgl1-mesa-dev libglu1-mesa-dev libsdl2-dev
 
     - name: Download & Install premake
       working-directory: RecastDemo