diff --git a/package-lock.json b/package-lock.json
index 011609c54b..ab3f8dc228 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "graphql",
-  "version": "15.8.0",
+  "version": "15.9.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "graphql",
-      "version": "15.8.0",
+      "version": "15.9.0",
       "license": "MIT",
       "devDependencies": {
         "@babel/core": "7.12.10",
diff --git a/package.json b/package.json
index 7ef1a6d546..a565d8a4fe 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "graphql",
-  "version": "15.8.0",
+  "version": "15.9.0",
   "description": "A Query Language and Runtime which can target any service.",
   "license": "MIT",
   "private": true,
diff --git a/src/version.js b/src/version.js
index 0fe2e8f54e..66bc423bfe 100644
--- a/src/version.js
+++ b/src/version.js
@@ -6,14 +6,14 @@
 /**
  * A string containing the version of the GraphQL.js library
  */
-export const version = '15.8.0';
+export const version = '15.9.0';
 
 /**
  * An object containing the components of the GraphQL.js version string
  */
 export const versionInfo = Object.freeze({
   major: 15,
-  minor: 8,
+  minor: 9,
   patch: 0,
   preReleaseTag: null,
 });