diff --git a/config.go b/config.go
index 3f9b2f8..4302c5d 100644
--- a/config.go
+++ b/config.go
@@ -205,7 +205,7 @@ type ServiceConfig struct {
 	CacheFlushDomains       []string       `mapstructure:"cache_flush_domains" toml:"cache_flush_domains" validate:"max=256"`
 	MaxConcurrentRequests   *int           `mapstructure:"max_concurrent_requests" toml:"max_concurrent_requests,omitempty" validate:"omitempty,gte=0"`
 	DHCPLeaseFile           string         `mapstructure:"dhcp_lease_file_path" toml:"dhcp_lease_file_path" validate:"omitempty,file"`
-	DHCPLeaseFileFormat     string         `mapstructure:"dhcp_lease_file_format" toml:"dhcp_lease_file_format" validate:"required_unless=DHCPLeaseFile '',omitempty,oneof=dnsmasq isc-dhcp"`
+	DHCPLeaseFileFormat     string         `mapstructure:"dhcp_lease_file_format" toml:"dhcp_lease_file_format" validate:"required_unless=DHCPLeaseFile '',omitempty,oneof=dnsmasq isc-dhcp kea-dhcp4"`
 	DiscoverMDNS            *bool          `mapstructure:"discover_mdns" toml:"discover_mdns,omitempty"`
 	DiscoverARP             *bool          `mapstructure:"discover_arp" toml:"discover_arp,omitempty"`
 	DiscoverDHCP            *bool          `mapstructure:"discover_dhcp" toml:"discover_dhcp,omitempty"`
diff --git a/config_test.go b/config_test.go
index a20b33c..cd392d5 100644
--- a/config_test.go
+++ b/config_test.go
@@ -111,6 +111,7 @@ func TestConfigValidation(t *testing.T) {
 		{"doh3 endpoint without type", doh3UpstreamEndpointWithoutType(t), false},
 		{"sdns endpoint without type", sdnsUpstreamEndpointWithoutType(t), false},
 		{"maximum number of flush cache domains", configWithInvalidFlushCacheDomain(t), true},
+		{"kea dhcp4 format", configWithDhcp4KeaFormat(t), false},
 	}
 
 	for _, tc := range tests {
@@ -307,6 +308,12 @@ func configWithInvalidLeaseFileFormat(t *testing.T) *ctrld.Config {
 	return cfg
 }
 
+func configWithDhcp4KeaFormat(t *testing.T) *ctrld.Config {
+	cfg := defaultConfig(t)
+	cfg.Service.DHCPLeaseFileFormat = "kea-dhcp4"
+	return cfg
+}
+
 func configWithInvalidDoHEndpoint(t *testing.T) *ctrld.Config {
 	cfg := defaultConfig(t)
 	cfg.Upstream["0"].Endpoint = "/1.1.1.1"