diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6b36bdbe..c0e3e0c0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -51,12 +51,12 @@ jobs:
         if: ${{ matrix.os == 'ubuntu-latest' && matrix.build_system == 'cmake' }}
         run: |
             sudo apt-get update
-            sudo apt-get install -y build-essential cmake gettext musl-tools
+            sudo apt-get install -y build-essential cmake gettext doxygen musl-tools
 
       # Install CMake on Mac
       - name: Install Dependencies
         if: ${{ matrix.os == 'macos-latest' && matrix.build_system == 'cmake' }}
-        run: brew install cmake gettext
+        run: brew install cmake gettext doxygen
 
       ##################
       # Build and Test #