diff --git a/.github/actions/build/action.yml b/.github/actions/build/action.yml
index 32018589..c9ea7ab2 100644
--- a/.github/actions/build/action.yml
+++ b/.github/actions/build/action.yml
@@ -14,33 +14,11 @@ runs:
       run: |
         apt-get -qq update
         apt-get -qq -y install lcov
-    - name: Install METIS
-      shell: bash
+    - name: Install additional dependencies to use MUMPS
       if: inputs.use-mumps == 'true'
-      run: |
-        apt-get -qq -y install gfortran
-        git clone -b v5.1.0.4 https://github.com/scivision/METIS.git
-        cd METIS
-        cmake -Bbuild -DCMAKE_INSTALL_PREFIX=$(pwd)/install -DCMAKE_BUILD_TYPE=Release
-        cmake --build build
-        cmake --install build
-        ls install/*
-        echo "METIS_DIR=$(pwd)/install" >> $GITHUB_ENV
-        echo "METIS_ROOT=$(pwd)/install" >> $GITHUB_ENV
-    - name: Install MUMPS
-      shell: bash
-      if: inputs.use-mumps == 'true'
-      run: |
-        git clone -b v5.5.1.11 https://github.com/scivision/mumps.git
-        cd mumps
-        cmake -Bbuild -DBUILD_SINGLE=on -DBUILD_DOUBLE=on -Dmetis=on -Dopenmp=on -Dparallel=off -DCMAKE_INSTALL_PREFIX=$(pwd)/install -DCMAKE_BUILD_TYPE=Release -S .
-        cmake --build build
-        cmake --install build
-        ls install/*
-        echo "MUMPS_DIR=$(pwd)/install" >> $GITHUB_ENV
+      uses: ./.github/actions/install-dependencies
     - name: Build
       shell: bash
-      # ensure that the installed compiler version is used
       run: |
         mkdir build && cd build
         export CMAKE_PREFIX_PATH=/opt/openmp
diff --git a/.github/actions/install-dependencies/action.yml b/.github/actions/install-dependencies/action.yml
new file mode 100644
index 00000000..2baa7435
--- /dev/null
+++ b/.github/actions/install-dependencies/action.yml
@@ -0,0 +1,49 @@
+name: "Install Dependencies"
+description: "Install METIS and MUMPS with caching"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install gfortran
+      shell: bash
+      run: |
+        apt-get -qq -y install gfortran
+    - name: Cache METIS
+      id: cache-metis
+      uses: actions/cache@v4
+      with:
+        path: METIS/install
+        key: metis-v5.1.0.4-${{ runner.os }}
+    - name: Install METIS
+      shell: bash
+      if: steps.cache-metis.outputs.cache-hit != 'true'
+      run: |
+        git clone -b v5.1.0.4 https://github.com/scivision/METIS.git
+        cd METIS
+        cmake -Bbuild -DCMAKE_INSTALL_PREFIX=$(pwd)/install -DCMAKE_BUILD_TYPE=Release
+        cmake --build build
+        cmake --install build
+    - name: Set METIS environment variables
+      shell: bash
+      run: |
+        echo "METIS_DIR=$GITHUB_WORKSPACE/METIS/install" >> $GITHUB_ENV
+        echo "METIS_ROOT=$GITHUB_WORKSPACE/METIS/install" >> $GITHUB_ENV
+    - name: Cache MUMPS
+      id: cache-mumps
+      uses: actions/cache@v4
+      with:
+        path: mumps/install
+        key: mumps-v5.5.1.11-metis-${{ runner.os }}
+    - name: Install MUMPS
+      shell: bash
+      if: steps.cache-mumps.outputs.cache-hit != 'true'
+      run: |
+        git clone -b v5.5.1.11 https://github.com/scivision/mumps.git
+        cd mumps
+        cmake -Bbuild -DBUILD_SINGLE=on -DBUILD_DOUBLE=on -Dmetis=on -Dopenmp=on -Dparallel=off -DCMAKE_INSTALL_PREFIX=$(pwd)/install -DCMAKE_BUILD_TYPE=Release -S .
+        cmake --build build
+        cmake --install build
+    - name: Set MUMPS environment variables
+      shell: bash
+      run: |
+        echo "MUMPS_DIR=$GITHUB_WORKSPACE/mumps/install" >> $GITHUB_ENV