diff --git a/.github/workflows/swift-debug-ubuntu.yml b/.github/workflows/swift-debug-ubuntu.yml
index 55c24ba51..28614f2a4 100644
--- a/.github/workflows/swift-debug-ubuntu.yml
+++ b/.github/workflows/swift-debug-ubuntu.yml
@@ -31,6 +31,8 @@ jobs:
         run: sudo apt install libboost-all-dev
       - name: 🖥️ Install X11
         run: sudo apt install libxcursor-dev libxt-dev libxi-dev libxinerama-dev libxrandr-dev
+      - name: 💻 Install GTK
+        run: sudo apt install libgtk-4-dev clang
       - name: 🧪 Test
         run: |
           echo "### Disabled Tests" >> $GITHUB_STEP_SUMMARY
diff --git a/.github/workflows/swift-ubuntu.yml b/.github/workflows/swift-ubuntu.yml
index c64fb2b93..abcfda376 100644
--- a/.github/workflows/swift-ubuntu.yml
+++ b/.github/workflows/swift-ubuntu.yml
@@ -31,5 +31,7 @@ jobs:
         run: sudo apt install libboost-all-dev
       - name: 🖥️ Install X11
         run: sudo apt install libxcursor-dev libxt-dev libxi-dev libxinerama-dev libxrandr-dev
+      - name: 💻 Install GTK
+        run: sudo apt install libgtk-4-dev clang
       - name: 📦 Build
         run: swift build -c release --target UsdView