diff --git a/until-each-right/docs/types/index.d.ts b/until-each-right/docs/types/index.d.ts
index 3c0a21e3..9cfad694 100644
--- a/until-each-right/docs/types/index.d.ts
+++ b/until-each-right/docs/types/index.d.ts
@@ -16,7 +16,7 @@
* limitations under the License.
*/
-// TypeScript Version: 2.0
+// TypeScript Version: 4.1
///
diff --git a/until-each/docs/types/index.d.ts b/until-each/docs/types/index.d.ts
index ed42fa5b..b8f08858 100644
--- a/until-each/docs/types/index.d.ts
+++ b/until-each/docs/types/index.d.ts
@@ -16,7 +16,7 @@
* limitations under the License.
*/
-// TypeScript Version: 2.0
+// TypeScript Version: 4.1
///