diff --git a/src/codeql.ts b/src/codeql.ts
index 1fa6d9662d..ac453d8a54 100644
--- a/src/codeql.ts
+++ b/src/codeql.ts
@@ -235,11 +235,18 @@ export interface ResolveQueriesOutput {
 
 export interface ResolveBuildEnvironmentOutput {
   configuration?: {
-    os?: string;
-    [language: string]: any;
+    [language: string]: {
+      os?: BuildEnvironmentOS;
+      [key: string]: unknown;
+    };
   };
 }
 
+export interface BuildEnvironmentOS {
+  name?: string;
+  version?: string;
+}
+
 export interface PackDownloadOutput {
   packs: PackDownloadItem[];
 }