diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 01cdae74dd..547837228b 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -7,4 +7,4 @@
 - [ ] Pull request is based on the develop branch
 - [ ] Pull request updates [CHANGES.md](https://github.com/vector-im/riotX-android/blob/develop/CHANGES.md)
 - [ ] Pull request includes screenshots or videos if containing UI changes
-- [ ] Pull request includes a [sign off](https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.rst#sign-off)
+- [ ] Pull request includes a [sign off](https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.md#sign-off)
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 45834afa21..489ec94b55 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,6 +1,6 @@
 # Contributing code to Matrix
 
-Please read https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.rst
+Please read https://github.com/matrix-org/synapse/blob/master/CONTRIBUTING.md
 
 Android support can be found in this [![Riot Android Matrix room #riot-android:matrix.org](https://img.shields.io/matrix/riot-android:matrix.org.svg?label=%23riot-android:matrix.org&logo=matrix&server_fqdn=matrix.org)](https://matrix.to/#/#riot-android:matrix.org) room.