diff --git a/go.mod b/go.mod
index 92057083..29bea4e0 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/golang/mock v1.5.0
 	github.com/google/go-cmp v0.5.2 // indirect
 	github.com/guptarohit/asciigraph v0.5.1
-	github.com/hetznercloud/hcloud-go v1.26.1
+	github.com/hetznercloud/hcloud-go v1.27.0
 	github.com/pelletier/go-toml v1.8.1
 	github.com/rjeczalik/interfaces v0.1.1
 	github.com/spf13/cobra v1.1.3
diff --git a/go.sum b/go.sum
index 3252ffd3..86d0cf4a 100644
--- a/go.sum
+++ b/go.sum
@@ -107,8 +107,8 @@ github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO
 github.com/hashicorp/mdns v1.0.0/go.mod h1:tL+uN++7HEJ6SQLQ2/p+z2pH24WQKWjBPkE0mNTz8vQ=
 github.com/hashicorp/memberlist v0.1.3/go.mod h1:ajVTdAv/9Im8oMAAj5G31PhhMCZJV2pPBoIllUwCN7I=
 github.com/hashicorp/serf v0.8.2/go.mod h1:6hOLApaqBFA1NXqRQAsxw9QxuDEvNxSQRwA/JwenrHc=
-github.com/hetznercloud/hcloud-go v1.26.1 h1:9d9yMmq0e1ePZ8r/CkASGFSHcpnV/aY/FK0XtD101Cw=
-github.com/hetznercloud/hcloud-go v1.26.1/go.mod h1:2C5uMtBiMoFr3m7lBFPf7wXTdh33CevmZpQIIDPGYJI=
+github.com/hetznercloud/hcloud-go v1.27.0 h1:dQ0k3VGHL2rKicOfWHQvKw//B9pXcVTgFGvLqjy8Ujw=
+github.com/hetznercloud/hcloud-go v1.27.0/go.mod h1:2C5uMtBiMoFr3m7lBFPf7wXTdh33CevmZpQIIDPGYJI=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
diff --git a/internal/cmd/firewall/add_rule.go b/internal/cmd/firewall/add_rule.go
index 04e21bfa..b0e09191 100644
--- a/internal/cmd/firewall/add_rule.go
+++ b/internal/cmd/firewall/add_rule.go
@@ -27,8 +27,8 @@ func newAddRuleCommand(cli *state.State) *cobra.Command {
 	cmd.RegisterFlagCompletionFunc("direction", cmpl.SuggestCandidates("in", "out"))
 	cmd.MarkFlagRequired("direction")
 
-	cmd.Flags().String("protocol", "", "Protocol (icmp, udp or tcp) (required)")
-	cmd.RegisterFlagCompletionFunc("protocol", cmpl.SuggestCandidates("icmp", "udp", "tcp"))
+	cmd.Flags().String("protocol", "", "Protocol (icmp, esp, gre, udp or tcp) (required)")
+	cmd.RegisterFlagCompletionFunc("protocol", cmpl.SuggestCandidates("icmp", "udp", "tcp", "esp", "gre"))
 	cmd.MarkFlagRequired("protocol")
 
 	cmd.Flags().StringArray("source-ips", []string{}, "Source IPs (CIDR Notation) (required when direction is in)")
diff --git a/internal/cmd/firewall/delete_rule.go b/internal/cmd/firewall/delete_rule.go
index af15b862..37de5dd2 100644
--- a/internal/cmd/firewall/delete_rule.go
+++ b/internal/cmd/firewall/delete_rule.go
@@ -28,8 +28,8 @@ func newDeleteRuleCommand(cli *state.State) *cobra.Command {
 	cmd.RegisterFlagCompletionFunc("direction", cmpl.SuggestCandidates("in", "out"))
 	cmd.MarkFlagRequired("direction")
 
-	cmd.Flags().String("protocol", "", "Protocol (icmp, udp or tcp) (required)")
-	cmd.RegisterFlagCompletionFunc("protocol", cmpl.SuggestCandidates("icmp", "udp", "tcp"))
+	cmd.Flags().String("protocol", "", "Protocol (icmp, esp, gre, udp or tcp) (required)")
+	cmd.RegisterFlagCompletionFunc("protocol", cmpl.SuggestCandidates("icmp", "udp", "tcp", "esp", "gre"))
 	cmd.MarkFlagRequired("protocol")
 
 	cmd.Flags().StringArray("source-ips", []string{}, "Source IPs (CIDR Notation) (required when direction is in)")