diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 75a9ed7..95056cb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
     - name: Install dependencies (linux)
       if: ${{ matrix.os == 'ubuntu-latest' }}
-      run: sudo apt-get update && sudo apt-get install libgl1-mesa-dev
+      run: sudo apt-get update && sudo apt-get install libgl1 libxcursor1 libxi6 libxinerama1 libxrandr2 xvfb
 
     - name: Check out module
       uses: actions/checkout@v2
diff --git a/gl41_test.go b/gl41_test.go
index 65d6bbe..688f957 100644
--- a/gl41_test.go
+++ b/gl41_test.go
@@ -121,6 +121,7 @@ func TestBasic(t *testing.T) {
 	// https://www.glfw.org/faq.html#41---how-do-i-create-an-opengl-30-context
 	glfw.WindowHint(glfw.OpenGLForwardCompatible, glfw.True)
 	glfw.WindowHint(glfw.OpenGLProfile, glfw.OpenGLCoreProfile)
+	glfw.WindowHint(glfw.StencilBits, 8)
 
 	window, err := glfw.CreateWindow(800, 600, "Test", nil, nil)
 	if err != nil {