diff --git a/pkg/runner/action_composite.go b/pkg/runner/action_composite.go
index 9001b48..a7b4143 100644
--- a/pkg/runner/action_composite.go
+++ b/pkg/runner/action_composite.go
@@ -69,6 +69,7 @@ func newCompositeRunContext(ctx context.Context, parent *RunContext, step action
 		Masks:        parent.Masks,
 		ExtraPath:    parent.ExtraPath,
 		Parent:       parent,
+		EventJSON:    parent.EventJSON,
 	}
 
 	return compositerc
diff --git a/pkg/runner/testdata/pull-request/main.yaml b/pkg/runner/testdata/pull-request/main.yaml
index b9946b9..eb81939 100644
--- a/pkg/runner/testdata/pull-request/main.yaml
+++ b/pkg/runner/testdata/pull-request/main.yaml
@@ -5,6 +5,22 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - run: echo '${{github.ref}}' 
+      # test refs from event.json
+      - run: echo '${{github.ref}}'
       - run: echo '${{github.head_ref}}' | grep sample-head-ref
       - run: echo '${{github.base_ref}}' | grep sample-base-ref
+      # test main/composite context equality with data from event.json
+      - run: |
+          runs:
+            using: composite
+            steps:
+            - run: |
+                echo WORKFLOW_GITHUB_CONTEXT="$WORKFLOW_GITHUB_CONTEXT"
+                echo COMPOSITE_GITHUB_CONTEXT="$COMPOSITE_GITHUB_CONTEXT"
+                [[ "$WORKFLOW_GITHUB_CONTEXT" = "$COMPOSITE_GITHUB_CONTEXT" ]]
+              env:
+                WORKFLOW_GITHUB_CONTEXT: ${{ tojson(tojson(github.event)) }}
+                COMPOSITE_GITHUB_CONTEXT: ${{ '${{tojson(github.event)}}' }}
+              shell: bash
+        shell: cp {0} action.yml
+      - uses: ./