diff --git a/.github/workflows/mynewt.yaml b/.github/workflows/mynewt.yaml
index 5c9edafa..48e7ca99 100644
--- a/.github/workflows/mynewt.yaml
+++ b/.github/workflows/mynewt.yaml
@@ -1,8 +1,5 @@
 # For development, trigger this on any push.
-on: [push, pull_request]
-
-# Eventually, we'll want to limit this to pull requests.
-# on: ???
+on: [pull_request]
 
 jobs:
   environment:
diff --git a/.github/workflows/sim.yaml b/.github/workflows/sim.yaml
index c39eb2b5..b893e0a3 100644
--- a/.github/workflows/sim.yaml
+++ b/.github/workflows/sim.yaml
@@ -1,8 +1,5 @@
 # For development, trigger this on any push.
-on: [push, pull_request]
-
-# Eventually, we'll want to limit this to pull requests.
-# on: ???
+on: [pull_request]
 
 jobs:
   environment: