diff --git a/.github/actions/install/action.yml b/.github/actions/install/action.yml
new file mode 100644
index 000000000..72a73b3e7
--- /dev/null
+++ b/.github/actions/install/action.yml
@@ -0,0 +1,17 @@
+name: install
+description: >
+  Installs Meteor and NPM dependencies.
+
+runs:
+
+  using: composite
+
+  steps:
+
+    - name: Install 💾
+      id: install
+      uses: meteor-actions/install@v6
+
+    - name: Postinstall 🪝
+      if: steps.install.outputs.ran-npm-install-hooks != 'true'
+      run: meteor npm run postinstall
diff --git a/.github/workflows/ci:build.yml b/.github/workflows/ci:build.yml
index c818ababc..09b984da2 100644
--- a/.github/workflows/ci:build.yml
+++ b/.github/workflows/ci:build.yml
@@ -34,7 +34,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install 💾
-        uses: meteor-actions/install@v6
+        uses: ./.github/actions/install
 
       - name: Get Meteor's Node version
         id: meteor-node
diff --git a/.github/workflows/ci:commit-msg.yml b/.github/workflows/ci:commit-msg.yml
index a715a858e..9b103a2d3 100644
--- a/.github/workflows/ci:commit-msg.yml
+++ b/.github/workflows/ci:commit-msg.yml
@@ -24,7 +24,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install 💾
-        uses: meteor-actions/install@v6
+        uses: ./.github/actions/install
 
       - name: Lint last pushed commit 👕
         if: github.event_name == 'push'
diff --git a/.github/workflows/ci:lint-config.yml b/.github/workflows/ci:lint-config.yml
index bbb329847..eed556ed6 100644
--- a/.github/workflows/ci:lint-config.yml
+++ b/.github/workflows/ci:lint-config.yml
@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install 💾
-        uses: meteor-actions/install@v6
+        uses: ./.github/actions/install
 
       - name: Lint config 👕
         run: meteor npm run lint-config
diff --git a/.github/workflows/ci:lint.yml b/.github/workflows/ci:lint.yml
index a528689b8..dd3542490 100644
--- a/.github/workflows/ci:lint.yml
+++ b/.github/workflows/ci:lint.yml
@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install 💾
-        uses: meteor-actions/install@v6
+        uses: ./.github/actions/install
 
       - name: Lint 👕
         run: meteor npm run lint
diff --git a/.github/workflows/ci:test.yml b/.github/workflows/ci:test.yml
index e92031f00..c00d7103c 100644
--- a/.github/workflows/ci:test.yml
+++ b/.github/workflows/ci:test.yml
@@ -31,11 +31,7 @@ jobs:
           key: ${{ runner.os }}-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
 
       - name: Install 💾
-        uses: meteor-actions/install@v6
-
-        # TODO Run only when install action hits the cache.
-      - name: Postinstall
-        run: meteor npm run postinstall
+        uses: ./.github/actions/install
 
       - name: Cache build 💽
         uses: meteor-actions/cache-build@v4
@@ -96,7 +92,7 @@ jobs:
           key: ${{ runner.os }}-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
 
       - name: Install 💾
-        uses: meteor-actions/install@v6
+        uses: ./.github/actions/install
 
       - name: Cache build 💽
         uses: meteor-actions/cache-build@v4
diff --git a/.github/workflows/ci:type-check.yml b/.github/workflows/ci:type-check.yml
index f3d5394a8..1cb9d96cb 100644
--- a/.github/workflows/ci:type-check.yml
+++ b/.github/workflows/ci:type-check.yml
@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install 💾
-        uses: meteor-actions/install@v6
+        uses: ./.github/actions/install
 
       - name: TypeScript check ☑️
         run: meteor npm run tsc