diff --git a/packages/lib/src/types/githubActionsWorkflow.ts b/packages/lib/src/types/githubActionsWorkflow.ts
index cc2eee7..916852e 100755
--- a/packages/lib/src/types/githubActionsWorkflow.ts
+++ b/packages/lib/src/types/githubActionsWorkflow.ts
@@ -1077,7 +1077,7 @@ export interface Workflow {
         /**
          * Allows workflows to be reused by other workflows.
          */
-        workflow_call?: {
+        workflow_call?: null | {
           /**
            * When using the workflow_call keyword, you can optionally specify inputs that are passed to the called workflow from the caller workflow.
            */