diff --git a/.changeset/mean-tigers-brake.md b/.changeset/mean-tigers-brake.md
new file mode 100644
index 0000000000..07871a590b
--- /dev/null
+++ b/.changeset/mean-tigers-brake.md
@@ -0,0 +1,5 @@
+---
+'@backstage/integration': patch
+---
+
+GitHub App ID can be a string too for environment variables otherwise it will fail validation
diff --git a/packages/integration/config.d.ts b/packages/integration/config.d.ts
index ddc84ae011..73ce43e001 100644
--- a/packages/integration/config.d.ts
+++ b/packages/integration/config.d.ts
@@ -89,9 +89,9 @@ export interface Config {
        */
       apps?: Array<{
         /**
-         * The numeric GitHub App ID
+         * The numeric GitHub App ID, string for environment variables
          */
-        appId: number;
+        appId: number | string;
         /**
          * The private key to use for auth against the app
          * @visibility secret