diff --git a/builder/package.json b/builder/package.json
index 9d37ba096f00..b4772d1acee5 100644
--- a/builder/package.json
+++ b/builder/package.json
@@ -48,7 +48,7 @@
     "@lumino/widgets": "^1.16.0",
     "ajv": "^6.12.3",
     "commander": "~6.0.0",
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "duplicate-package-checker-webpack-plugin": "^3.0.0",
     "file-loader": "~6.0.0",
     "fs-extra": "^9.0.1",
diff --git a/dev_mode/package.json b/dev_mode/package.json
index 47d2243b3f55..499025a99ddf 100644
--- a/dev_mode/package.json
+++ b/dev_mode/package.json
@@ -167,7 +167,7 @@
     "@jupyterlab/builder": "^3.0.0-rc.10",
     "@jupyterlab/buildutils": "^3.0.0-rc.10",
     "chokidar": "^3.4.0",
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "duplicate-package-checker-webpack-plugin": "^3.0.0",
     "file-loader": "~6.0.0",
     "fs-extra": "^9.0.1",
diff --git a/examples/app/package.json b/examples/app/package.json
index 81740159abae..0187e853f59d 100644
--- a/examples/app/package.json
+++ b/examples/app/package.json
@@ -44,7 +44,7 @@
     "react-dom": "^17.0.1"
   },
   "devDependencies": {
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "file-loader": "~6.0.0",
     "fs-extra": "^9.0.1",
     "glob": "~7.1.6",
diff --git a/examples/cell/package.json b/examples/cell/package.json
index fa1e6ef111a8..04f6997cc5ef 100644
--- a/examples/cell/package.json
+++ b/examples/cell/package.json
@@ -20,7 +20,7 @@
     "es6-promise": "~4.2.8"
   },
   "devDependencies": {
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "file-loader": "~6.0.0",
     "mini-css-extract-plugin": "~0.11.0",
     "raw-loader": "~4.0.0",
diff --git a/examples/console/package.json b/examples/console/package.json
index f6b29c2c7c14..4595e8536be2 100644
--- a/examples/console/package.json
+++ b/examples/console/package.json
@@ -19,7 +19,7 @@
   },
   "devDependencies": {
     "@types/codemirror": "^0.0.97",
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "file-loader": "~6.0.0",
     "mini-css-extract-plugin": "~0.11.0",
     "raw-loader": "~4.0.0",
diff --git a/examples/federated/core_package/package.json b/examples/federated/core_package/package.json
index 46f302aa13be..42b72b600155 100644
--- a/examples/federated/core_package/package.json
+++ b/examples/federated/core_package/package.json
@@ -155,7 +155,7 @@
   "devDependencies": {
     "@jupyterlab/builder": "^3.0.0-rc.10",
     "copy-webpack-plugin": "^6.0.1",
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "file-loader": "~6.0.0",
     "fs-extra": "^9.0.1",
     "glob": "~7.1.6",
diff --git a/examples/filebrowser/package.json b/examples/filebrowser/package.json
index d80a451c624d..a274ad88e981 100644
--- a/examples/filebrowser/package.json
+++ b/examples/filebrowser/package.json
@@ -23,7 +23,7 @@
   },
   "devDependencies": {
     "@types/codemirror": "^0.0.97",
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "file-loader": "~6.0.0",
     "mini-css-extract-plugin": "~0.11.0",
     "raw-loader": "~4.0.0",
diff --git a/examples/notebook/package.json b/examples/notebook/package.json
index 38e3473566bf..7c3b08bb741d 100644
--- a/examples/notebook/package.json
+++ b/examples/notebook/package.json
@@ -24,7 +24,7 @@
   },
   "devDependencies": {
     "@types/codemirror": "^0.0.97",
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "file-loader": "~6.0.0",
     "mini-css-extract-plugin": "~0.11.0",
     "raw-loader": "~4.0.0",
diff --git a/examples/terminal/package.json b/examples/terminal/package.json
index 7a834cc7a167..71b76690254b 100644
--- a/examples/terminal/package.json
+++ b/examples/terminal/package.json
@@ -15,7 +15,7 @@
     "es6-promise": "~4.2.8"
   },
   "devDependencies": {
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "file-loader": "~6.0.0",
     "mini-css-extract-plugin": "~0.11.0",
     "raw-loader": "~4.0.0",
diff --git a/packages/nbconvert-css/package.json b/packages/nbconvert-css/package.json
index bf5ab4be7789..ec8d94b2abb2 100644
--- a/packages/nbconvert-css/package.json
+++ b/packages/nbconvert-css/package.json
@@ -42,7 +42,7 @@
     "@jupyterlab/rendermime": "^3.0.0-rc.10"
   },
   "devDependencies": {
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "file-loader": "~6.0.0",
     "mini-css-extract-plugin": "~0.11.0",
     "null-loader": "^4.0.0",
diff --git a/packages/services/examples/typescript-browser-with-output/package.json b/packages/services/examples/typescript-browser-with-output/package.json
index 8202d210ede6..10017d60f9a4 100644
--- a/packages/services/examples/typescript-browser-with-output/package.json
+++ b/packages/services/examples/typescript-browser-with-output/package.json
@@ -23,7 +23,7 @@
     "@jupyterlab/services": "^6.0.0-rc.10"
   },
   "devDependencies": {
-    "css-loader": "~3.2.0",
+    "css-loader": "^5.0.1",
     "rimraf": "~3.0.0",
     "style-loader": "~1.2.1",
     "typescript": "~4.0.2",