diff --git a/packages/kg-default-cards/package.json b/packages/kg-default-cards/package.json
index ad83bd80d..1c1224529 100644
--- a/packages/kg-default-cards/package.json
+++ b/packages/kg-default-cards/package.json
@@ -46,7 +46,7 @@
     "simple-dom": "1.4.0",
     "sinon": "21.0.3",
     "tsx": "4.21.0",
-    "typescript": "5.8.3",
+    "typescript": "5.9.3",
     "typescript-eslint": "8.57.1"
   },
   "dependencies": {
diff --git a/packages/kg-mobiledoc-html-renderer/package.json b/packages/kg-mobiledoc-html-renderer/package.json
index 961c012b0..8c5da01ba 100644
--- a/packages/kg-mobiledoc-html-renderer/package.json
+++ b/packages/kg-mobiledoc-html-renderer/package.json
@@ -48,7 +48,7 @@
     "should": "13.2.3",
     "sinon": "21.0.3",
     "tsx": "4.21.0",
-    "typescript": "5.8.3",
+    "typescript": "5.9.3",
     "typescript-eslint": "8.57.1"
   }
 }
diff --git a/packages/kg-parser-plugins/package.json b/packages/kg-parser-plugins/package.json
index 26cee8046..27c7ccfef 100644
--- a/packages/kg-parser-plugins/package.json
+++ b/packages/kg-parser-plugins/package.json
@@ -47,7 +47,7 @@
     "should": "13.2.3",
     "sinon": "21.0.3",
     "tsx": "4.21.0",
-    "typescript": "5.8.3",
+    "typescript": "5.9.3",
     "typescript-eslint": "8.57.1"
   },
   "dependencies": {
diff --git a/yarn.lock b/yarn.lock
index 23752710c..ad0c7929c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -14509,11 +14509,6 @@ typescript@5.8.2:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.8.2.tgz#8170b3702f74b79db2e5a96207c15e65807999e4"
   integrity sha512-aJn6wq13/afZp/jT9QZmwEjDqqvSGp1VT5GVg+f/t6/oVyrgXM6BY1h9BRh/O5p3PlUPAe+WuiEZOmb/49RqoQ==
 
-typescript@5.8.3:
-  version "5.8.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.8.3.tgz#92f8a3e5e3cf497356f4178c34cd65a7f5e8440e"
-  integrity sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==
-
 typescript@5.9.3, "typescript@>=3 < 6":
   version "5.9.3"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.9.3.tgz#5b4f59e15310ab17a216f5d6cf53ee476ede670f"