diff --git a/.github/workflows/backend.yaml b/.github/workflows/backend.yaml
index 7694b9c..bea9e03 100644
--- a/.github/workflows/backend.yaml
+++ b/.github/workflows/backend.yaml
@@ -20,15 +20,12 @@ jobs:
         run: sudo apt-get install -y cmake
 
       - name: Install OpenCASCADE
-        run: sudo apt-get install tcl-dev libocct-* occt-misc
+        run: sudo apt-get install tcl-dev tk-dev libocct-* occt-misc
 
       - name: Create build directory
         working-directory: backend
         run: mkdir build
 
-      - name: find opencascade
-        run: sudo find /usr -name "OpenCASCADEConfig.cmake"
-
       - name: Cmake Build
         working-directory: backend/build
         run: cmake ..