diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 703c9f5..c828f67 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
         submodules: recursive
 
     - name: Install Dependencies
-      run: sudo apt update && sudo apt -y install libsodium-dev cmake
+      run: sudo apt update && sudo apt -y install libsodium-dev cmake libxext-dev
 
     - name: Configure CMake
       run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}