diff --git a/packages/gatsby-plugin-netlify-cms/package.json b/packages/gatsby-plugin-netlify-cms/package.json
index 82ffee3929590..03fda4ca42679 100644
--- a/packages/gatsby-plugin-netlify-cms/package.json
+++ b/packages/gatsby-plugin-netlify-cms/package.json
@@ -13,9 +13,9 @@
     "html-webpack-plugin": "^3.2.0",
     "html-webpack-tags-plugin": "^2.0.17",
     "lodash": "^4.17.20",
-    "mini-css-extract-plugin": "^0.11.3",
+    "mini-css-extract-plugin": "^0.12.0",
     "netlify-identity-widget": "^1.9.1",
-    "webpack": "^4.45.0"
+    "webpack": "^4.46.0"
   },
   "devDependencies": {
     "@babel/cli": "^7.12.1",
diff --git a/yarn.lock b/yarn.lock
index 8a98aa8d7851a..da627f68b9129 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9841,10 +9841,10 @@ engine.io@~3.4.0:
     engine.io-parser "~2.2.0"
     ws "^7.1.2"
 
-enhanced-resolve@^4.1.1, enhanced-resolve@^4.2.0, enhanced-resolve@^4.3.0:
-  version "4.3.0"
-  resolved "https://registry.yarnpkg.com/enhanced-resolve/-/enhanced-resolve-4.3.0.tgz#3b806f3bfafc1ec7de69551ef93cca46c1704126"
-  integrity sha512-3e87LvavsdxyoCfGusJnrZ5G8SLPOFeHSNpZI/ATL9a5leXo2k0w6MKnbqhdBad9qTobSfB20Ld7UmgoNbAZkQ==
+enhanced-resolve@^4.1.1, enhanced-resolve@^4.2.0, enhanced-resolve@^4.5.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/enhanced-resolve/-/enhanced-resolve-4.5.0.tgz#2f3cfd84dbe3b487f18f2db2ef1e064a571ca5ec"
+  integrity sha512-Nv9m36S/vxpsI+Hc4/ZGRs0n9mXqSWGGq49zxb/cJfPAQMbUtttJAlNPS4AQzaBdw/pKskw5bMbekT/Y7W/Wlg==
   dependencies:
     graceful-fs "^4.1.2"
     memory-fs "^0.5.0"
@@ -11629,13 +11629,6 @@ gatsby-node-helpers@^0.3.0:
     lodash "^4.17.4"
     p-is-promise "^1.1.0"
 
-gatsby-plugin-utils@^0.8.0:
-  version "0.8.0"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-utils/-/gatsby-plugin-utils-0.8.0.tgz#2ecd848e6e3362ee929e496bc11528267d2fb96e"
-  integrity sha512-EQC1U7LQVHaI6jXMbx4ryvA8rV1yYrlyxwO2T4nuLUDOO1STUpKTYCH4ySOEtXi6f4P5v7NxgHkFoid6ayY9HA==
-  dependencies:
-    joi "^17.2.1"
-
 gatsby-plugin-webfonts@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/gatsby-plugin-webfonts/-/gatsby-plugin-webfonts-1.1.4.tgz#f6fb8daf0acc4c59511c98964fceca35504014ac"
@@ -17108,7 +17101,7 @@ min-indent@^1.0.0:
   resolved "https://registry.yarnpkg.com/min-indent/-/min-indent-1.0.1.tgz#a63f681673b30571fbe8bc25686ae746eefa9869"
   integrity sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==
 
-mini-css-extract-plugin@^0.11.2, mini-css-extract-plugin@^0.11.3:
+mini-css-extract-plugin@^0.11.2:
   version "0.11.3"
   resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.11.3.tgz#15b0910a7f32e62ffde4a7430cfefbd700724ea6"
   integrity sha512-n9BA8LonkOkW1/zn+IbLPQmovsL0wMb9yx75fMJQZf2X1Zoec9yTZtyMePcyu19wPkmFbzZZA6fLTotpFhQsOA==
@@ -17118,6 +17111,16 @@ mini-css-extract-plugin@^0.11.2, mini-css-extract-plugin@^0.11.3:
     schema-utils "^1.0.0"
     webpack-sources "^1.1.0"
 
+mini-css-extract-plugin@^0.12.0:
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.12.0.tgz#ddeb74fd6304ca9f99c1db74acc7d5b507705454"
+  integrity sha512-z6PQCe9rd1XUwZ8gMaEVwwRyZlrYy8Ba1gRjFP5HcV51HkXX+XlwZ+a1iAYTjSYwgNBXoNR7mhx79mDpOn5fdw==
+  dependencies:
+    loader-utils "^1.1.0"
+    normalize-url "1.9.1"
+    schema-utils "^1.0.0"
+    webpack-sources "^1.1.0"
+
 mini-svg-data-uri@^1.2.3:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/mini-svg-data-uri/-/mini-svg-data-uri-1.2.3.tgz#e16baa92ad55ddaa1c2c135759129f41910bc39f"
@@ -26220,10 +26223,10 @@ webpack-virtual-modules@^0.2.2:
   dependencies:
     debug "^3.0.0"
 
-webpack@^4.14.0, webpack@^4.44.1, webpack@^4.44.2, webpack@^4.45.0:
-  version "4.45.0"
-  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.45.0.tgz#bcdc1ddb43959adb47f8974e60d944027267c1be"
-  integrity sha512-JhDaVi4CbRcwLLAoqC7eugMSMJnZbIfE2AyjaZ19pnOIh/R2O/lXOiXA2tQFN0iXEcxgpPJsPJHW2wOWqiTLcw==
+webpack@^4.14.0, webpack@^4.44.1, webpack@^4.44.2, webpack@^4.46.0:
+  version "4.46.0"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.46.0.tgz#bf9b4404ea20a073605e0a011d188d77cb6ad542"
+  integrity sha512-6jJuJjg8znb/xRItk7bkT0+Q7AHCYjjFnvKIWQPkNIOyRqoCGvkOs0ipeQzrqz4l5FtN5ZI/ukEHroeX/o1/5Q==
   dependencies:
     "@webassemblyjs/ast" "1.9.0"
     "@webassemblyjs/helper-module-context" "1.9.0"
@@ -26233,7 +26236,7 @@ webpack@^4.14.0, webpack@^4.44.1, webpack@^4.44.2, webpack@^4.45.0:
     ajv "^6.10.2"
     ajv-keywords "^3.4.1"
     chrome-trace-event "^1.0.2"
-    enhanced-resolve "^4.3.0"
+    enhanced-resolve "^4.5.0"
     eslint-scope "^4.0.3"
     json-parse-better-errors "^1.0.2"
     loader-runner "^2.4.0"