diff --git a/github/index.ts b/github/index.ts
index 35abb03cb..341abeb1b 100644
--- a/github/index.ts
+++ b/github/index.ts
@@ -809,7 +809,7 @@ function buildPromptDataForPR(pr: GitHubPullRequest) {
       ]
     })(),
     ...(() => {
-      const reviews = pr.reviews.nodes ?? []
+      const reviews = pr.reviews?.nodes ?? []
       if (reviews.length === 0) return []
       return [
         "<pull_request_reviews>",
diff --git a/github/src/types.ts b/github/src/types.ts
index 65312a50e..145bc530e 100644
--- a/github/src/types.ts
+++ b/github/src/types.ts
@@ -74,7 +74,7 @@ export type GitHubPullRequest = {
   comments: {
     nodes: GitHubComment[]
   }
-  reviews: {
+  reviews?: {
     nodes: GitHubReview[]
   }
   reviewThreads: {