diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0e30340..b7397f9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -72,14 +72,12 @@ jobs:
       uses: actions/cache@v2
       with:
         path: /usr/local/bin/unmunch
-        key: hunspell-${{ hashFiles("${{ env.HUNSPELL_DIR }}/**") }}
+        key: hunspell-${{ hashFiles("lt/hunspell/**") }}
       id: hunspell-cache
 
     - if: steps.hunspell-cache.outputs.cache-hit != 'true'
       run: |
-        # Checkout Hunspell code
         git clone https://github.com/hunspell/hunspell ${HUNSPELL_DIR}
-        # Compilation steps
         cd ${HUNSPELL_DIR}
         sudo apt-get install autoconf automake autopoint libtool
         autoreconf -vfi
@@ -102,12 +100,21 @@ jobs:
         repository: languagetool-org/languagetool
         path: ${{ env.LT_HOME }}
         token: ${{ secrets.LT_OS_TOKEN }}
-        # TODO: remove this once the new tokenisation branch is merged into master!
         ref: pt/dict/new_tokenisation
 
-    - name: Build LT
+    - name: Cache LT Build
+      uses: actions/cache@v2
+      with:
+        path: |
+          ${{ env.LT_HOME }}/target
+          ~/.m2
+        key: lt-build-${{ hashFiles('**/pom.xml', '**/*.java') }}
+      id: lt-cache
+
+    - if: steps.lt-cache.outputs.cache-hit != 'true'
+      run: |
+        mvn clean install -DskipTests
       working-directory: ${{ env.LT_HOME }}
-      run: mvn clean install -DskipTests
 
     - name: Build POS tagging dictionary
       working-directory: ${{ env.PT_DICT_HOME }}