diff --git a/go.mod b/go.mod
index dc62a11770..ecc60d6d18 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module golang.org/x/tools
 
-go 1.11
+go 1.12
 
 require (
 	github.com/yuin/goldmark v1.2.1
diff --git a/gopls/go.mod b/gopls/go.mod
index bdc0b56a24..5cf45e1e70 100644
--- a/gopls/go.mod
+++ b/gopls/go.mod
@@ -1,6 +1,6 @@
 module golang.org/x/tools/gopls
 
-go 1.13
+go 1.12
 
 require (
 	github.com/sergi/go-diff v1.1.0