diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 6f4202f..c25003f 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -24,11 +24,15 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.11"
+          cache: "pip"
+          cache-dependency-path: libs/openant-core/pyproject.toml
 
       - name: Set up Node.js
         uses: actions/setup-node@v5
         with:
           node-version: "22"
+          cache: "npm"
+          cache-dependency-path: libs/openant-core/parsers/javascript/package-lock.json
 
       - name: Install Python dependencies
         working-directory: libs/openant-core
@@ -38,9 +42,17 @@ jobs:
         working-directory: libs/openant-core
         run: ruff check .
 
+      - name: Cache JS parser node_modules
+        id: cache-node-modules
+        uses: actions/cache@v4
+        with:
+          path: libs/openant-core/parsers/javascript/node_modules
+          key: ${{ runner.os }}-jsparser-nodemodules-${{ hashFiles('libs/openant-core/parsers/javascript/package-lock.json') }}
+
       - name: Install JS parser dependencies
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
         working-directory: libs/openant-core/parsers/javascript
-        run: npm install
+        run: npm ci
 
       - name: Run Python and parser tests
         working-directory: libs/openant-core
@@ -67,11 +79,15 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.11"
+          cache: "pip"
+          cache-dependency-path: libs/openant-core/pyproject.toml
 
       - name: Set up Node.js
         uses: actions/setup-node@v5
         with:
           node-version: "22"
+          cache: "npm"
+          cache-dependency-path: libs/openant-core/parsers/javascript/package-lock.json
 
       - name: Vet
         working-directory: apps/openant-cli
@@ -101,9 +117,17 @@ jobs:
         working-directory: libs/openant-core
         run: pip install -e ".[dev]"
 
+      - name: Cache JS parser node_modules
+        id: cache-node-modules
+        uses: actions/cache@v4
+        with:
+          path: libs/openant-core/parsers/javascript/node_modules
+          key: ${{ runner.os }}-jsparser-nodemodules-${{ hashFiles('libs/openant-core/parsers/javascript/package-lock.json') }}
+
       - name: Install JS parser dependencies
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
         working-directory: libs/openant-core/parsers/javascript
-        run: npm install
+        run: npm ci
 
       - name: Run Go CLI integration tests
         working-directory: libs/openant-core