diff --git a/.github/workflows/validate-rgas.yml b/.github/workflows/validate-rgas.yml
index 8b24d83243..5e11c6fc7f 100644
--- a/.github/workflows/validate-rgas.yml
+++ b/.github/workflows/validate-rgas.yml
@@ -1,5 +1,5 @@
 name: YAML schema validator
-on: [push]
+on: [pull_request, push]
 
 jobs:
   yaml-schema-validation:
diff --git a/.github/workflows/validate_mapfiles.yml b/.github/workflows/validate_mapfiles.yml
index 5dcde52e33..9b045ee68b 100644
--- a/.github/workflows/validate_mapfiles.yml
+++ b/.github/workflows/validate_mapfiles.yml
@@ -1,5 +1,5 @@
 name: YAML schema validator
-on: [push]
+on: [pull_request, push]
 
 jobs:
   yaml-schema-validation:
@@ -15,4 +15,4 @@ jobs:
         schema: RobustToolbox/Schemas/mapfile.yml
         path_pattern: .*Resources/Maps/.*
         validators_path: RobustToolbox/Schemas/mapfile_validators.py
-        validators_requirements: RobustToolbox/Schemas/mapfile_requirements.txt
\ No newline at end of file
+        validators_requirements: RobustToolbox/Schemas/mapfile_requirements.txt