diff --git a/.github/workflows/cli-build.yml b/.github/workflows/cli-build.yml
index 8eb2611d..4c2176c8 100644
--- a/.github/workflows/cli-build.yml
+++ b/.github/workflows/cli-build.yml
@@ -14,6 +14,11 @@ jobs:
         working-directory: ./theseus_cli
     steps:
       - uses: actions/checkout@v2
+      - name: install dependencies (ubuntu only)
+        if: matrix.platform == 'ubuntu-latest'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libgtk-3-dev libwebkit2gtk-4.0-dev libappindicator3-dev librsvg2-dev patchelf
       - name: Get build cache
         id: cache-build
         uses: actions/cache@v2
diff --git a/.github/workflows/lib-build.yml b/.github/workflows/lib-build.yml
index 1892eca8..16723f50 100644
--- a/.github/workflows/lib-build.yml
+++ b/.github/workflows/lib-build.yml
@@ -14,6 +14,11 @@ jobs:
         working-directory: ./theseus
     steps:
       - uses: actions/checkout@v2
+      - name: install dependencies (ubuntu only)
+        if: matrix.platform == 'ubuntu-latest'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libgtk-3-dev libwebkit2gtk-4.0-dev libappindicator3-dev librsvg2-dev patchelf
       - name: Get build cache
         id: cache-build
         uses: actions/cache@v2
@@ -26,6 +31,5 @@ jobs:
           toolchain: stable
       - uses: actions-rs/cargo@v1
         name: Build program
-        working-directory: ./theseus
         with:
           command: build
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