diff --git a/packages/minifier-css/package.js b/packages/minifier-css/package.js
index 373e5ae579..11ef149df4 100644
--- a/packages/minifier-css/package.js
+++ b/packages/minifier-css/package.js
@@ -1,11 +1,11 @@
 Package.describe({
   summary: 'CSS minifier',
-  version: '1.6.2'
+  version: '1.6.3'
 });
 
 Npm.depends({
-  postcss: '8.4.16',
-  cssnano: '4.1.11'
+  postcss: '8.4.21',
+  cssnano: '5.1.15'
 });
 
 Package.onUse(function (api) {
diff --git a/packages/standard-minifier-css/package.js b/packages/standard-minifier-css/package.js
index c8f218fb66..6e00e92a3b 100644
--- a/packages/standard-minifier-css/package.js
+++ b/packages/standard-minifier-css/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'standard-minifier-css',
-  version: '1.9.0',
+  version: '1.9.1',
   summary: 'Standard css minifier used with Meteor apps by default.',
   documentation: 'README.md',
 });
@@ -13,9 +13,9 @@ Package.registerBuildPlugin({
     'logging',
   ],
   npmDependencies: {
-    "@babel/runtime": "7.18.9",
+    "@babel/runtime": "7.21.0",
     "source-map": "0.7.4",
-    "lru-cache": "6.0.0",
+    "lru-cache": "8.0.0",
     "micromatch": "4.0.5",
   },
   sources: [
@@ -24,7 +24,7 @@ Package.registerBuildPlugin({
 });
 
 Package.onUse(function(api) {
-  api.use('minifier-css@1.5.4');
+  api.use('minifier-css@1.6.2');
   api.use('isobuild:minifier-plugin@1.0.0');
   api.use('logging@1.3.1');
 });