diff --git a/cni/cni.go b/cni/cni.go
index 4a58dcc1..0173062b 100644
--- a/cni/cni.go
+++ b/cni/cni.go
@@ -28,7 +28,7 @@ const (
 )
 
 // Supported CNI versions.
-var VersionsSupported = []string{"0.2.0", "0.3.0", "0.4.0", "1.0.0"}
+var VersionsSupported = []string{"0.2.0", "0.3.0", "0.3.1", "0.4.0", "1.0.0"}
 
 type KVP struct {
 	Name  string          `json:"name"`