diff --git a/package-lock.json b/package-lock.json
index 2dad4ea6..4aa8b18e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -42,7 +42,7 @@
         "tempy": "^3.1.0",
         "ts-node": "^10.9.2",
         "ts-node-test-register": "^10.0.0",
-        "typescript": "^5.5.4"
+        "typescript": "^5.6.2"
       },
       "engines": {
         "node": ">=18"
diff --git a/package.json b/package.json
index 32e04ec5..ee7d586a 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "tempy": "^3.1.0",
     "ts-node": "^10.9.2",
     "ts-node-test-register": "^10.0.0",
-    "typescript": "^5.5.4"
+    "typescript": "^5.6.2"
   },
   "repository": "https://github.com/teppeis/fixclosure",
   "license": "MIT"