diff --git a/api/v1alpha1/githubactionrunner_types.go b/api/v1alpha1/githubactionrunner_types.go
index e8895835..1d4a98d4 100644
--- a/api/v1alpha1/githubactionrunner_types.go
+++ b/api/v1alpha1/githubactionrunner_types.go
@@ -32,6 +32,7 @@ type GithubActionRunnerSpec struct {
 	MaxRunners int `json:"maxRunners"`
 
 	// Minimum time to live for a runner. This can avoid trashing by keeping pods around longer than required by jobs, keeping caches hot.
+	// +kubebuilder:validation:Optional
 	// +kubebuilder:default="0m"
 	// +operator-sdk:csv:customresourcedefinitions:type=spec,displayName="Minimum time to live"
 	MinTTL metav1.Duration `json:"minTtl"`
diff --git a/config/crd/bases/garo.tietoevry.com_githubactionrunners.yaml b/config/crd/bases/garo.tietoevry.com_githubactionrunners.yaml
index a0b7fbf6..33dda109 100644
--- a/config/crd/bases/garo.tietoevry.com_githubactionrunners.yaml
+++ b/config/crd/bases/garo.tietoevry.com_githubactionrunners.yaml
@@ -3826,7 +3826,6 @@ spec:
             required:
             - maxRunners
             - minRunners
-            - minTtl
             - organization
             - podTemplateSpec
             type: object