diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c5676cb..a993ec8 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -41,7 +41,7 @@ Some common examples formatted in YAML
 
 ### Basic
 
-Adding a mainnet endpoint involes appending endpoint data to [`endpoints/mainnet.yaml`](./endpoints/mainnet.yaml);
+Adding a mainnet endpoint involves appending endpoint data to [`endpoints/mainnet.yaml`](./endpoints/mainnet.yaml);
 ```yaml
 - endpoint: https://checkpoint-sync.example.com
   name: example.com