diff --git a/ghost/portal/package.json b/ghost/portal/package.json
index 8c4e73699c..2d72e9466e 100644
--- a/ghost/portal/package.json
+++ b/ghost/portal/package.json
@@ -15,7 +15,7 @@
     "registry": "https://registry.npmjs.org/"
   },
   "dependencies": {
-    "@testing-library/jest-dom": "5.11.0",
+    "@testing-library/jest-dom": "5.11.1",
     "@testing-library/react": "10.4.7",
     "@testing-library/user-event": "11.4.2",
     "prop-types": "15.7.2",
diff --git a/ghost/portal/yarn.lock b/ghost/portal/yarn.lock
index 26f4665785..581a2c67ee 100644
--- a/ghost/portal/yarn.lock
+++ b/ghost/portal/yarn.lock
@@ -1449,16 +1449,16 @@
     dom-accessibility-api "^0.4.5"
     pretty-format "^25.5.0"
 
-"@testing-library/jest-dom@5.11.0":
-  version "5.11.0"
-  resolved "https://registry.yarnpkg.com/@testing-library/jest-dom/-/jest-dom-5.11.0.tgz#1439f08dc85ce7c6d3bbad0ee5d53b2206f55768"
-  integrity sha512-mhaCySy7dZlyfcxcYy+0jLllODHEiHkVdmwQ00wD0HrWiSx0fSVHz/0WmdlRkvhfSOuqsRsBUreXOtBvruWGQA==
+"@testing-library/jest-dom@5.11.1":
+  version "5.11.1"
+  resolved "https://registry.yarnpkg.com/@testing-library/jest-dom/-/jest-dom-5.11.1.tgz#b9541d7625cec9e5feb647f49a96c43f7c055cdd"
+  integrity sha512-NHOHjDwyBoqM7mXjNLieSp/6vJ17DILzhNTw7+RarluaBkyWRzWgFj+d6xnd1adMBlwfQSeR2FWGTxHXCxeMSA==
   dependencies:
     "@babel/runtime" "^7.9.2"
     "@types/testing-library__jest-dom" "^5.9.1"
     aria-query "^4.2.2"
     chalk "^3.0.0"
-    css "^2.2.4"
+    css "^3.0.0"
     css.escape "^1.5.1"
     jest-diff "^25.1.0"
     jest-matcher-utils "^25.1.0"
@@ -3399,7 +3399,7 @@ css.escape@^1.5.1:
   resolved "https://registry.yarnpkg.com/css.escape/-/css.escape-1.5.1.tgz#42e27d4fa04ae32f931a4b4d4191fa9cddee97cb"
   integrity sha1-QuJ9T6BK4y+TGktNQZH6nN3ul8s=
 
-css@^2.0.0, css@^2.2.4:
+css@^2.0.0:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/css/-/css-2.2.4.tgz#c646755c73971f2bba6a601e2cf2fd71b1298929"
   integrity sha512-oUnjmWpy0niI3x/mPL8dVEI1l7MnG3+HHyRPHf+YFSbK+svOhXpmSOcDURUh2aOCgl2grzrOPt1nHLuCVFULLw==
@@ -3409,6 +3409,15 @@ css@^2.0.0, css@^2.2.4:
     source-map-resolve "^0.5.2"
     urix "^0.1.0"
 
+css@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/css/-/css-3.0.0.tgz#4447a4d58fdd03367c516ca9f64ae365cee4aa5d"
+  integrity sha512-DG9pFfwOrzc+hawpmqX/dHYHJG+Bsdb0klhyi1sDneOgGOXy9wQIC8hzyVp1e4NRYDBdxcylvywPkkXCHAzTyQ==
+  dependencies:
+    inherits "^2.0.4"
+    source-map "^0.6.1"
+    source-map-resolve "^0.6.0"
+
 cssdb@^4.4.0:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/cssdb/-/cssdb-4.4.0.tgz#3bf2f2a68c10f5c6a08abd92378331ee803cddb0"
@@ -9662,6 +9671,14 @@ source-map-resolve@^0.5.0, source-map-resolve@^0.5.2:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
+source-map-resolve@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.6.0.tgz#3d9df87e236b53f16d01e58150fc7711138e5ed2"
+  integrity sha512-KXBr9d/fO/bWo97NXsPIAW1bFSBOuCnjbNTBMO7N59hsv5i9yzRDfcYwwt0l04+VqnKC+EwzvJZIP/qkuMgR/w==
+  dependencies:
+    atob "^2.1.2"
+    decode-uri-component "^0.2.0"
+
 source-map-support@^0.5.6, source-map-support@~0.5.12:
   version "0.5.19"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"