diff --git a/dist/index.js b/dist/index.js
index 0b7a3b9..eed71ef 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -47067,7 +47067,7 @@ var pullRequestSchema = objectType({
     ref: stringType()
   }),
   state: stringType(),
-  body: stringType().optional()
+  body: stringType().optional().nullable()
 });
 
 // src/inputs.ts
diff --git a/src/types.ts b/src/types.ts
index 803db4e..048ca5f 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -13,7 +13,7 @@ export const pullRequestSchema = object({
     ref: string(),
   }),
   state: string(),
-  body: string().optional(),
+  body: string().optional().nullable(),
 })
 export type PullRequest = InferType<typeof pullRequestSchema>