diff --git a/README.md b/README.md
index 129b9cb..21f9d5c 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,9 @@ lockComment: >
 
 # pulls:
 #   daysUntilLock: 30
+
+# Repository to extend settings from
+# _extends: repo
 ```
 
 ## How are issues and pull requests determined to be inactive?
diff --git a/assets/app-description.md b/assets/app-description.md
index 455db5d..b0bf0dc 100644
--- a/assets/app-description.md
+++ b/assets/app-description.md
@@ -41,6 +41,9 @@ lockComment: >
 
 # pulls:
 #   daysUntilLock: 30
+
+# Repository to extend settings from
+# _extends: repo
 ```
 
 ## Supporting the Project
diff --git a/package.json b/package.json
index e9ef9cc..3a15a6d 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
   "dependencies": {
     "joi": "^13.3.0",
     "probot": "^6.2.0",
+    "probot-config": "^0.1.0",
     "probot-scheduler": "^1.1.0",
     "uuid": "^3.2.1"
   },
diff --git a/src/index.js b/src/index.js
index bbb0b03..941502b 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,5 +1,6 @@
 const uuidV4 = require('uuid/v4');
 const createScheduler = require('probot-scheduler');
+const getMergedConfig = require('probot-config');
 
 const App = require('./lock');
 const schema = require('./schema');
@@ -27,7 +28,7 @@ module.exports = robot => {
     const configFile = 'lock.yml';
     const repo = context.repo();
     try {
-      const repoConfig = await context.config(configFile);
+      const repoConfig = await getMergedConfig(context, configFile);
       if (!repoConfig) {
         logger.warn({repo, configFile}, 'Missing config');
         repoConfig = {perform: false};
diff --git a/yarn.lock b/yarn.lock
index 51e1448..8a38bb9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2006,6 +2006,13 @@ joi@^13.3.0:
     isemail "3.x.x"
     topo "3.x.x"
 
+js-yaml@^3.10.0:
+  version "3.12.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.12.0.tgz#eaed656ec8344f10f527c6bfa1b6e2244de167d1"
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
 js-yaml@^3.6.1:
   version "3.11.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.11.0.tgz#597c1a8bd57152f26d622ce4117851a51f5ebaef"
@@ -3061,6 +3068,12 @@ prepend-http@^1.0.1:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
 
+probot-config@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/probot-config/-/probot-config-0.1.0.tgz#b6ef11ccc468e7f28e06deb68b34e093b7c7e88e"
+  dependencies:
+    js-yaml "^3.10.0"
+
 probot-scheduler@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/probot-scheduler/-/probot-scheduler-1.1.0.tgz#eda193fd7faaf9a193a8b362903d78741dcda9b7"