diff --git a/package.json b/package.json
index 889e458c..c137b5f7 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "@sourcegraph/tsconfig": "^4.0.1",
     "eslint": "^8.57.1",
     "husky": "^5.0.9",
-    "prettier": "^2.5.1",
+    "prettier": "^3.9.9",
     "semantic-release": "^17.3.9",
     "stylelint": "^15.11.0",
     "typescript": "^4.5.5"
diff --git a/yarn.lock b/yarn.lock
index 2b3897bb..d6ea6dc3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5121,10 +5121,10 @@ prepend-http@^1.0.1:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
   integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
 
-prettier@^2.5.1:
-  version "2.5.1"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.5.1.tgz#fff75fa9d519c54cf0fce328c1017d94546bc56a"
-  integrity sha512-vBZcPRUR5MZJwoyi3ZoyQlc1rXeEck8KgeC9AwwOn+exuxLxq5toTRDTSaVrXHxelDMHy9zlicw8u66yxoSUFg==
+prettier@^3.9.9:
+  version "3.9.9"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.9.tgz#09b826918c91cd4cbc80e0cbd1d2a922ff04f233"
+  integrity sha512-Z/CJHIkdujO/OtN7nXUii0Rf3VT5SRuhjBA82Xvu2XhBUgX3nhP67T0LHceBdQLex7OOFGTox+Q5Yg8Jk2Qivg==
 
 pretty-format@^26.6.2:
   version "26.6.2"