diff --git a/webui/CHANGELOG.md b/webui/CHANGELOG.md
index 9ea0013fd..94b883548 100644
--- a/webui/CHANGELOG.md
+++ b/webui/CHANGELOG.md
@@ -23,6 +23,7 @@ This change log covers only the frontend library (webui) of Open VSX.
 ### Dependencies
 
 - Bump react-avatar-editor from `13.0.2` to `15.1.0` ([#1787](https://github.com/eclipse/openvsx/pull/1787))
+- Bump postcss from `8.5.6` to `8.5.10` ([#1793](https://github.com/eclipse/openvsx/pull/1793))
 
 ## [v0.20.1] (20/04/2026)
 
diff --git a/webui/yarn.lock b/webui/yarn.lock
index 88f215899..a6f19246b 100644
--- a/webui/yarn.lock
+++ b/webui/yarn.lock
@@ -6144,13 +6144,13 @@ __metadata:
   linkType: hard
 
 "postcss@npm:^8.5.6":
-  version: 8.5.6
-  resolution: "postcss@npm:8.5.6"
+  version: 8.5.10
+  resolution: "postcss@npm:8.5.10"
   dependencies:
     nanoid: "npm:^3.3.11"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 10/9e4fbe97574091e9736d0e82a591e29aa100a0bf60276a926308f8c57249698935f35c5d2f4e80de778d0cbb8dcffab4f383d85fd50c5649aca421c3df729b86
+  checksum: 10/7eac6169e535b63c8412e94d4f6047fc23efa3e9dde804b541940043c831b25f1cd867d83cd2c4371ad2450c8abcb42c208aa25668c1f0f3650d7f72faf711a8
   languageName: node
   linkType: hard