diff --git a/go.mod b/go.mod
index 05a81bf..4d6aa18 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module golang.org/x/pkgsite
 
-go 1.15
+go 1.16
 
 require (
 	cloud.google.com/go v0.66.0