diff --git a/compiler/protogen/protogen.go b/compiler/protogen/protogen.go
index 482e846..b3f7a6e 100644
--- a/compiler/protogen/protogen.go
+++ b/compiler/protogen/protogen.go
@@ -1109,6 +1109,12 @@
 	g.skip = true
 }
 
+// Unskip reverts a previous call to Skip, re-including the generated file in
+// the plugin output.
+func (g *GeneratedFile) Unskip() {
+	g.skip = false
+}
+
 // Annotate associates a symbol in a generated Go file with a location in a
 // source .proto file.
 //