diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index 15636fba1..57e3022e5 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -47,6 +47,10 @@ jobs:
         python-version: '3.10'
         auto-activate-base: false
 
+    - name: Install EGL on Linux (PySide6 needs it)
+      if: ${{ matrix.config.name == 'Linux' }}
+      run: sudo apt-get install -y libegl1-mesa-dev
+
     - name: Get version using git describe
       working-directory: hexrdgui
       run: echo "HEXRDGUI_GIT_DESCRIBE=$(git describe --tag)" >> $GITHUB_ENV
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ace167e70..5fa38723c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -55,9 +55,13 @@ jobs:
         repository: HEXRD/examples
         path: examples
 
+    - name: Install EGL on Linux (PySide6 needs it)
+      if: ${{ matrix.config.name == 'Linux' }}
+      run: sudo apt-get install -y libegl1-mesa-dev
+
     - name: Set environment variable to work around setuptools/numpy issue
       run: echo 'SETUPTOOLS_USE_DISTUTILS=stdlib' >> $GITHUB_ENV
-      if: ${{ matrix.config.os == 'windows-latest'}}
+      if: ${{ matrix.config.name == 'Windows' }}
 
     - name: Install HEXRD
       run: |