diff --git a/pkg/fission-cli/cmd/environment/command.go b/pkg/fission-cli/cmd/environment/command.go
index feea1f0b..df19f13b 100644
--- a/pkg/fission-cli/cmd/environment/command.go
+++ b/pkg/fission-cli/cmd/environment/command.go
@@ -59,7 +59,7 @@ func Commands() *cobra.Command {
 		Optional: []flag.Flag{flag.EnvImage, flag.EnvPoolsize,
 			flag.EnvBuilderImage, flag.EnvBuildCmd, flag.EnvImagePullSecret,
 			flag.RunTimeMinCPU, flag.RunTimeMaxCPU, flag.RunTimeMinMemory, flag.RunTimeMaxMemory,
-			flag.EnvTerminationGracePeriod, flag.EnvKeepArchive,
+			flag.EnvTerminationGracePeriod, flag.EnvKeepArchive, flag.EnvRuntime,
 			flag.NamespaceEnvironment, flag.EnvExternalNetwork,
 			flag.Labels, flag.Annotation},
 	})
diff --git a/pkg/fission-cli/cmd/environment/update.go b/pkg/fission-cli/cmd/environment/update.go
index 8e05d09b..3d5b871c 100644
--- a/pkg/fission-cli/cmd/environment/update.go
+++ b/pkg/fission-cli/cmd/environment/update.go
@@ -163,6 +163,12 @@ func updateExistingEnvironmentWithCmd(env *fv1.Environment, input cli.Input) (*f
 		env.Spec.Resources.Limits[v1.ResourceMemory] = memLimit
 	}
 
+	if input.IsSet(flagkey.EnvRuntime) {
+		runtimeEnvParams := input.StringSlice(flagkey.EnvRuntime)
+		runtimeEnvList := util.GetEnvVarFromStringSlice(runtimeEnvParams)
+		env.Spec.Runtime.Container.Env = runtimeEnvList
+	}
+
 	limitCPU := env.Spec.Resources.Limits[v1.ResourceCPU]
 	requestCPU := env.Spec.Resources.Requests[v1.ResourceCPU]