diff --git a/.github/workflows/coverage.yaml b/.github/workflows/coverage.yaml
index 4169d28..62c5e12 100644
--- a/.github/workflows/coverage.yaml
+++ b/.github/workflows/coverage.yaml
@@ -1,7 +1,9 @@
 # For help debugging build failures open an issue on the RStudio community with the 'github-actions' tag.
 # https://community.rstudio.com/new-topic?category=Package%20development&tags=github-actions
 on:
-  push:
+  pull_request:
+    types:
+      - opened
     branches:
       - master