diff --git a/package-lock.json b/package-lock.json
index 17c0a86..8ecc2d0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@ampproject/remapping",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@ampproject/remapping",
-      "version": "2.1.0",
+      "version": "2.1.1",
       "license": "Apache-2.0",
       "dependencies": {
         "@jridgewell/trace-mapping": "^0.3.0"
diff --git a/package.json b/package.json
index ccc2033..8805f80 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ampproject/remapping",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "Remap sequential sourcemaps through transformations to point at the original source code",
   "keywords": [
     "source",