diff --git a/go/internal/gcimporter/iimport.go b/go/internal/gcimporter/iimport.go
index cdb332cd150..475b04de412 100644
--- a/go/internal/gcimporter/iimport.go
+++ b/go/internal/gcimporter/iimport.go
@@ -45,20 +45,11 @@ func (r *intReader) uint64() uint64 {
 }
 
 // Keep this in sync with constants in iexport.go.
-//
-// Temporarily, the x/tools importer accepts generic code at both version 1 and
-// 2. However, version 2 contains some breaking changes on top of version 1:
-//   - the 'implicit' bit is added to exported constraints
-//   - a 'kind' byte is added to constant values (not yet done)
-//
-// Once we've completed the bump to version 2 in the standard library, we'll
-// remove support for generics here at version 1.
 const (
-	iexportVersionGo1_11 = 0
-	iexportVersionPosCol = 1
-	iexportVersionGo1_18 = 2
-	// TODO: before release, change this back to 2.
-	iexportVersionGenerics = iexportVersionPosCol
+	iexportVersionGo1_11   = 0
+	iexportVersionPosCol   = 1
+	iexportVersionGo1_18   = 2
+	iexportVersionGenerics = 2
 )
 
 type ident struct {