diff --git a/__tests__/utils/context.test.ts b/__tests__/utils/context.test.ts
index 76cf6e94..92174cf6 100644
--- a/__tests__/utils/context.test.ts
+++ b/__tests__/utils/context.test.ts
@@ -31,6 +31,18 @@ describe('getAssignees', () => {
         },
       },
     }))).toEqual(['test']);
+    expect(getAssignees(getContext({
+      eventName: 'pull_request_target',
+      payload: {
+        sender: {
+          type: 'User',
+          login: 'test',
+        },
+        'pull_request': {
+          assignees: [],
+        },
+      },
+    }))).toEqual(['test']);
   });
 
   it('should empty 1', () => {
diff --git a/package.json b/package.json
index aa281fee..8531c5ed 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@technote-space/assign-author",
-  "version": "1.5.1",
+  "version": "1.5.2",
   "description": "GitHub actions to assign author to issue or PR.",
   "keywords": [
     "github",
diff --git a/src/utils/context.ts b/src/utils/context.ts
index 815c723e..608e3e32 100644
--- a/src/utils/context.ts
+++ b/src/utils/context.ts
@@ -6,7 +6,7 @@ const getCurrentAssignees = (context: Context): string[] | false => {
     return context.payload.issue && 'assignees' in context.payload.issue ? context.payload.issue.assignees.map(assignee => assignee.login) : false;
   }
 
-  if ('pull_request' === context.eventName) {
+  if ('pull_request' === context.eventName || 'pull_request_target' === context.eventName) {
     return context.payload.pull_request && 'assignees' in context.payload.pull_request ? context.payload.pull_request.assignees.map(assignee => assignee.login) : false;
   }
 
diff --git a/yarn.lock b/yarn.lock
index 60ac210a..6410c500 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -839,9 +839,9 @@
     "@types/babel__traverse" "*"
 
 "@types/babel__generator@*":
-  version "7.6.1"
-  resolved "https://registry.yarnpkg.com/@types/babel__generator/-/babel__generator-7.6.1.tgz#4901767b397e8711aeb99df8d396d7ba7b7f0e04"
-  integrity sha512-bBKm+2VPJcMRVwNhxKu8W+5/zT7pwNEqeokFOmbvVSqGzFneNxYcEBro9Ac7/N9tlsaPYnZLK8J1LWKkMsLAew==
+  version "7.6.2"
+  resolved "https://registry.yarnpkg.com/@types/babel__generator/-/babel__generator-7.6.2.tgz#f3d71178e187858f7c45e30380f8f1b7415a12d8"
+  integrity sha512-MdSJnBjl+bdwkLskZ3NGFp9YcXGx5ggLpQQPqtgakVhsWK0hTtNYhjpZLlWQTviGTvF8at+Bvli3jV7faPdgeQ==
   dependencies:
     "@babel/types" "^7.0.0"
 
@@ -854,9 +854,9 @@
     "@babel/types" "^7.0.0"
 
 "@types/babel__traverse@*", "@types/babel__traverse@^7.0.6":
-  version "7.0.14"
-  resolved "https://registry.yarnpkg.com/@types/babel__traverse/-/babel__traverse-7.0.14.tgz#e99da8c075d4fb098c774ba65dabf7dc9954bd13"
-  integrity sha512-8w9szzKs14ZtBVuP6Wn7nMLRJ0D6dfB0VEBEyRgxrZ/Ln49aNMykrghM2FaNn4FJRzNppCSa0Rv9pBRM5Xc3wg==
+  version "7.0.15"
+  resolved "https://registry.yarnpkg.com/@types/babel__traverse/-/babel__traverse-7.0.15.tgz#db9e4238931eb69ef8aab0ad6523d4d4caa39d03"
+  integrity sha512-Pzh9O3sTK8V6I1olsXpCfj2k/ygO2q1X0vhhnDrEQyYLHZesWz+zMZMVcwXLCYf0U36EtmyYaFGPfXlTtDHe3A==
   dependencies:
     "@babel/types" "^7.3.0"