diff --git a/package-lock.json b/package-lock.json
index e157b455..d62e4e95 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1700,9 +1700,9 @@
       }
     },
     "eslint-plugin-prettier": {
-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-prettier/-/eslint-plugin-prettier-3.1.3.tgz",
-      "integrity": "sha512-+HG5jmu/dN3ZV3T6eCD7a4BlAySdN7mLIbJYo0z1cFQuI+r2DiTJEFeF68ots93PsnrMxbzIZ2S/ieX+mkrBeQ==",
+      "version": "3.1.4",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-prettier/-/eslint-plugin-prettier-3.1.4.tgz",
+      "integrity": "sha512-jZDa8z76klRqo+TdGDTFJSavwbnWK2ZpqGKNZ+VvweMW516pDUMmQ2koXvxEE4JhzNvTv+radye/bWGBmA6jmg==",
       "dev": true,
       "requires": {
         "prettier-linter-helpers": "^1.0.0"
@@ -2734,9 +2734,9 @@
       "dev": true
     },
     "lint-staged": {
-      "version": "10.2.9",
-      "resolved": "https://registry.npmjs.org/lint-staged/-/lint-staged-10.2.9.tgz",
-      "integrity": "sha512-ziRAuXEqvJLSXg43ezBpHxRW8FOJCXISaXU//BWrxRrp5cBdRkIx7g5IsB3OI45xYGE0S6cOacfekSjDyDKF2g==",
+      "version": "10.2.10",
+      "resolved": "https://registry.npmjs.org/lint-staged/-/lint-staged-10.2.10.tgz",
+      "integrity": "sha512-dgelFaNH6puUGAcU+OVMgbfpKSerNYsPSn6+nlbRDjovL0KigpsVpCu0PFZG6BJxX8gnHJqaZlR9krZamQsb0w==",
       "dev": true,
       "requires": {
         "chalk": "^4.0.0",
@@ -2767,9 +2767,9 @@
           }
         },
         "chalk": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.0.0.tgz",
-          "integrity": "sha512-N9oWFcegS0sFr9oh1oz2d7Npos6vNoWW9HvtCg5N1KRFpUhaAhvTv5Y58g880fZaEYSNm3qDz8SU1UrGvp+n7A==",
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz",
+          "integrity": "sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==",
           "dev": true,
           "requires": {
             "ansi-styles": "^4.1.0",
@@ -2846,9 +2846,9 @@
       }
     },
     "listr2": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/listr2/-/listr2-2.1.0.tgz",
-      "integrity": "sha512-pWrbMLO+6jxGbgAasTLUzfRYdBaQvv6sNTWDfIX8ENBNmTwt/eafZ/LlJ66/dNaDnEhzCpWricLH4U9cjSAHYg==",
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/listr2/-/listr2-2.1.3.tgz",
+      "integrity": "sha512-6oy3QhrZAlJGrG8oPcRp1hix1zUpb5AvyvZ5je979HCyf48tIj3Hn1TG5+rfyhz30t7HfySH/OIaVbwrI2kruA==",
       "dev": true,
       "requires": {
         "chalk": "^4.0.0",
@@ -2872,9 +2872,9 @@
           }
         },
         "chalk": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.0.0.tgz",
-          "integrity": "sha512-N9oWFcegS0sFr9oh1oz2d7Npos6vNoWW9HvtCg5N1KRFpUhaAhvTv5Y58g880fZaEYSNm3qDz8SU1UrGvp+n7A==",
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz",
+          "integrity": "sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==",
           "dev": true,
           "requires": {
             "ansi-styles": "^4.1.0",
@@ -3016,9 +3016,9 @@
           }
         },
         "chalk": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.0.0.tgz",
-          "integrity": "sha512-N9oWFcegS0sFr9oh1oz2d7Npos6vNoWW9HvtCg5N1KRFpUhaAhvTv5Y58g880fZaEYSNm3qDz8SU1UrGvp+n7A==",
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz",
+          "integrity": "sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==",
           "dev": true,
           "requires": {
             "ansi-styles": "^4.1.0",
diff --git a/package.json b/package.json
index 346dc98d..b9d8264b 100644
--- a/package.json
+++ b/package.json
@@ -45,9 +45,9 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.11.0",
     "eslint-plugin-json": "2.1.1",
-    "eslint-plugin-prettier": "3.1.3",
+    "eslint-plugin-prettier": "3.1.4",
     "husky": "4.2.5",
-    "lint-staged": "10.2.9",
+    "lint-staged": "10.2.10",
     "npm-run-all": "4.1.5",
     "prettier": "2.0.5",
     "standard-version": "7.1.0",
diff --git a/src/docker.ts b/src/docker.ts
index 45769bfb..2b54b88e 100644
--- a/src/docker.ts
+++ b/src/docker.ts
@@ -1,7 +1,7 @@
 class Docker {
   readonly repository = 'renovate/renovate';
   // renovate: datasource=docker depName=renovate/renovate versioning=docker
-  readonly tag = '21.6.3-slim';
+  readonly tag = '21.12.2-slim';
   readonly tagSuffix = '-slim';
 
   image(): string {