diff --git a/internal/pkg/core/olt_platform.go b/internal/pkg/core/olt_platform.go
index 897f4cb..b85dd4b 100644
--- a/internal/pkg/core/olt_platform.go
+++ b/internal/pkg/core/olt_platform.go
@@ -20,11 +20,11 @@
 import (
 	"context"
 
-	"github.com/opencord/voltha-lib-go/v3/pkg/flows"
-	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+	"github.com/opencord/voltha-lib-go/v4/pkg/flows"
+	"github.com/opencord/voltha-lib-go/v4/pkg/log"
 	"github.com/opencord/voltha-openolt-adapter/internal/pkg/olterrors"
-	ofp "github.com/opencord/voltha-protos/v3/go/openflow_13"
-	"github.com/opencord/voltha-protos/v3/go/voltha"
+	ofp "github.com/opencord/voltha-protos/v4/go/openflow_13"
+	"github.com/opencord/voltha-protos/v4/go/voltha"
 )
 
 /*=====================================================================