diff --git a/examples/app/package.json b/examples/app/package.json
index c953f5b405..18f1d9e177 100644
--- a/examples/app/package.json
+++ b/examples/app/package.json
@@ -33,7 +33,7 @@
     "aws-cdk-lib": "^2.200.1",
     "constructs": "^10.4.2",
     "source-map-support": "^0.5.21",
-    "tsx": "^4.19.4",
+    "tsx": "^4.20.1",
     "typescript": "^5.8.3",
     "vitest": "^3.0.5"
   },
diff --git a/layers/package.json b/layers/package.json
index 8e671315c0..26258d4a77 100644
--- a/layers/package.json
+++ b/layers/package.json
@@ -44,6 +44,6 @@
     "aws-cdk": "^2.1018.0",
     "aws-cdk-lib": "^2.200.1",
     "esbuild": "^0.25.5",
-    "tsx": "^4.19.4"
+    "tsx": "^4.20.1"
   }
 }
diff --git a/package-lock.json b/package-lock.json
index 002766b646..d43f835eca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -73,7 +73,7 @@
         "aws-cdk-lib": "^2.200.1",
         "constructs": "^10.4.2",
         "source-map-support": "^0.5.21",
-        "tsx": "^4.19.4",
+        "tsx": "^4.20.1",
         "typescript": "^5.8.3",
         "vitest": "^3.0.5"
       }
@@ -112,7 +112,7 @@
         "aws-cdk": "^2.1018.0",
         "aws-cdk-lib": "^2.200.1",
         "esbuild": "^0.25.5",
-        "tsx": "^4.19.4"
+        "tsx": "^4.20.1"
       },
       "bin": {
         "layer": "bin/layers.js"
@@ -24347,9 +24347,9 @@
       "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="
     },
     "node_modules/tsx": {
-      "version": "4.19.4",
-      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.19.4.tgz",
-      "integrity": "sha512-gK5GVzDkJK1SI1zwHf32Mqxf2tSJkNx+eYcNly5+nHvWqXUJYUkWBQtKauoESz3ymezAI++ZwT855x5p5eop+Q==",
+      "version": "4.20.1",
+      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.20.1.tgz",
+      "integrity": "sha512-JsFUnMHIE+g8KllOvWTrSOwCKM10xLcsesvUQR61znsbrcwZ4U/QaqdymmvTqG5GMD7k2VFv9UG35C4dRy34Ag==",
       "license": "MIT",
       "dependencies": {
         "esbuild": "~0.25.0",