diff --git a/.github/workflows/coverage.yaml b/.github/workflows/coverage.yaml
index d81a2da1..ee2b9ec9 100644
--- a/.github/workflows/coverage.yaml
+++ b/.github/workflows/coverage.yaml
@@ -19,7 +19,7 @@ jobs:
       reports_path: ${{ steps.list_reports_path.outputs.reports_path }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-node@v3
         with:
diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index e7faef39..144b1d12 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -14,7 +14,7 @@ jobs:
         shell: bash
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 2
 
@@ -44,10 +44,10 @@ jobs:
         shell: bash
     strategy:
       matrix:
-        node_version: [18, 19, 20]
+        node_version: [18, 19, 20, 21]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-node@v3
         with:
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 1714fa9c..e2220d8c 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -52,7 +52,7 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 2
           ref: ${{ env.SOURCE_BRANCH }}
@@ -85,7 +85,7 @@ jobs:
       pull-requests: write
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 2
           ref: ${{ env.SOURCE_BRANCH }}
diff --git a/common/changes/@fabernovel/heart-api/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-api/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..e1e2c726
--- /dev/null
+++ b/common/changes/@fabernovel/heart-api/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-api",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-api"
+}
\ No newline at end of file
diff --git a/common/changes/@fabernovel/heart-cli/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-cli/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..62024910
--- /dev/null
+++ b/common/changes/@fabernovel/heart-cli/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-cli",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-cli"
+}
\ No newline at end of file
diff --git a/common/changes/@fabernovel/heart-common/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-common/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..d28b69ff
--- /dev/null
+++ b/common/changes/@fabernovel/heart-common/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-common",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-common"
+}
\ No newline at end of file
diff --git a/common/changes/@fabernovel/heart-greenit/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-greenit/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..4f71a4e6
--- /dev/null
+++ b/common/changes/@fabernovel/heart-greenit/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-greenit",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-greenit"
+}
\ No newline at end of file
diff --git a/common/changes/@fabernovel/heart-lighthouse/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-lighthouse/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..41ea7623
--- /dev/null
+++ b/common/changes/@fabernovel/heart-lighthouse/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-lighthouse",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-lighthouse"
+}
\ No newline at end of file
diff --git a/common/changes/@fabernovel/heart-mysql/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-mysql/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..26f0bf65
--- /dev/null
+++ b/common/changes/@fabernovel/heart-mysql/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-mysql",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-mysql"
+}
\ No newline at end of file
diff --git a/common/changes/@fabernovel/heart-observatory/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-observatory/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..c92e4c9b
--- /dev/null
+++ b/common/changes/@fabernovel/heart-observatory/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-observatory",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-observatory"
+}
\ No newline at end of file
diff --git a/common/changes/@fabernovel/heart-slack/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-slack/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..82c2602d
--- /dev/null
+++ b/common/changes/@fabernovel/heart-slack/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-slack",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-slack"
+}
\ No newline at end of file
diff --git a/common/changes/@fabernovel/heart-ssllabs-server/ci-test-with-node-21_2023-10-18-14-48.json b/common/changes/@fabernovel/heart-ssllabs-server/ci-test-with-node-21_2023-10-18-14-48.json
new file mode 100644
index 00000000..ed40feff
--- /dev/null
+++ b/common/changes/@fabernovel/heart-ssllabs-server/ci-test-with-node-21_2023-10-18-14-48.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@fabernovel/heart-ssllabs-server",
+      "comment": "Add compatibility with Node.js 21",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@fabernovel/heart-ssllabs-server"
+}
\ No newline at end of file
diff --git a/modules/api/package.json b/modules/api/package.json
index 2526a702..8bda38a3 100644
--- a/modules/api/package.json
+++ b/modules/api/package.json
@@ -58,7 +58,7 @@
     "@fabernovel/heart-cli": "^4.0.0"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   },
   "heart": {
     "id": "api",
diff --git a/modules/cli/package.json b/modules/cli/package.json
index 29524105..eea40ad0 100644
--- a/modules/cli/package.json
+++ b/modules/cli/package.json
@@ -61,6 +61,6 @@
     "typescript": "^5.3.3"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   }
 }
diff --git a/modules/common/package.json b/modules/common/package.json
index 5350849f..27507cbf 100644
--- a/modules/common/package.json
+++ b/modules/common/package.json
@@ -58,6 +58,6 @@
     "typescript": "^5.3.3"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   }
 }
diff --git a/modules/greenit/package.json b/modules/greenit/package.json
index 51bbae4f..5665f8df 100644
--- a/modules/greenit/package.json
+++ b/modules/greenit/package.json
@@ -62,7 +62,7 @@
     "@fabernovel/heart-cli": "^4.0.0"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   },
   "heart": {
     "id": "greenit",
diff --git a/modules/lighthouse/package.json b/modules/lighthouse/package.json
index 4db65b9f..19faa812 100644
--- a/modules/lighthouse/package.json
+++ b/modules/lighthouse/package.json
@@ -56,7 +56,7 @@
     "@fabernovel/heart-cli": "^4.0.0"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   },
   "heart": {
     "id": "lighthouse",
diff --git a/modules/mysql/package.json b/modules/mysql/package.json
index 5f43ebbe..571e74fa 100644
--- a/modules/mysql/package.json
+++ b/modules/mysql/package.json
@@ -58,7 +58,7 @@
     "@fabernovel/heart-cli": "^4.0.0"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   },
   "heart": {
     "id": "mysql",
diff --git a/modules/observatory/package.json b/modules/observatory/package.json
index 4b74f3e4..644dd46a 100644
--- a/modules/observatory/package.json
+++ b/modules/observatory/package.json
@@ -53,7 +53,7 @@
     "@fabernovel/heart-cli": "^4.0.0"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   },
   "heart": {
     "id": "observatory",
diff --git a/modules/slack/package.json b/modules/slack/package.json
index fe893b00..256f3e16 100644
--- a/modules/slack/package.json
+++ b/modules/slack/package.json
@@ -54,7 +54,7 @@
     "@fabernovel/heart-cli": "^4.0.0"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   },
   "heart": {
     "id": "slack",
diff --git a/modules/ssllabs-server/package.json b/modules/ssllabs-server/package.json
index 24396883..1033023c 100644
--- a/modules/ssllabs-server/package.json
+++ b/modules/ssllabs-server/package.json
@@ -53,7 +53,7 @@
     "@fabernovel/heart-cli": "^4.0.0"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   },
   "heart": {
     "id": "ssllabs-server",
diff --git a/modules/tpl/package.json b/modules/tpl/package.json
index 781f5d04..e7473349 100644
--- a/modules/tpl/package.json
+++ b/modules/tpl/package.json
@@ -51,7 +51,7 @@
     "@fabernovel/heart-cli": "^4.0.0"
   },
   "engines": {
-    "node": ">=18 <21"
+    "node": ">=18 <22"
   },
   "heart": {
     "id": "tpl",
diff --git a/rush.json b/rush.json
index 90f6b9d9..5cc38b79 100644
--- a/rush.json
+++ b/rush.json
@@ -80,7 +80,7 @@
    * Specify a SemVer range to ensure developers use a NodeJS version that is appropriate
    * for your repo.
    */
-  "nodeSupportedVersionRange": ">=18 <21",
+  "nodeSupportedVersionRange": ">=18 <22",
 
   /**
    * If you would like the version specifiers for your dependencies to be consistent, then