diff --git a/types/lolex/index.d.ts b/types/lolex/index.d.ts
index 35c4880a5b..3f7031f266 100644
--- a/types/lolex/index.d.ts
+++ b/types/lolex/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for lolex 3
+// Type definitions for lolex 3.1
 // Project: https://github.com/sinonjs/lolex
 // Definitions by: Wim Looman <https://github.com/Nemo157>
 //                 Josh Goldberg <https://github.com/joshuakgoldberg>