diff --git a/kvstore/kvstore.go b/kvstore/kvstore.go
index acc2b9d..4c5a000 100644
--- a/kvstore/kvstore.go
+++ b/kvstore/kvstore.go
@@ -151,10 +151,11 @@ const (
 )
 
 type InsertConfig struct {
-	Mode            InsertMode
-	BackgroundFetch bool
-	Metadata        []byte
-	TTLSec          uint32
+	Mode              InsertMode
+	BackgroundFetch   bool
+	Metadata          []byte
+	TTLSec            uint32
+	IfGenerationMatch uint64
 }
 
 // Insert adds a key to the associated KV store.
@@ -171,6 +172,9 @@ func (s *Store) InsertWithConfig(key string, value io.Reader, config *InsertConf
 		if config.TTLSec != 0 {
 			abiConf.TTLSec(config.TTLSec)
 		}
+		if config.IfGenerationMatch != 0 {
+			abiConf.IfGenerationMatch(config.IfGenerationMatch)
+		}
 	}
 
 	var body *fastly.HTTPBody