diff --git a/CHANGELOG.md b/CHANGELOG.md
index a379b7eb..cabd5613 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## master / unreleased
 
 * [DEPENDENCY] Update quay.io/cortexproject/cortex Docker tag to v1.15.0 #453
+* [BUGFIX] Correctly interpret .Capabilities.KubeVersion when it looks like a prerelease #457
 
 ## 2.1.0 / 2023-03-17
 
diff --git a/templates/_helpers.tpl b/templates/_helpers.tpl
index bc2b90a2..f2457d5d 100644
--- a/templates/_helpers.tpl
+++ b/templates/_helpers.tpl
@@ -112,7 +112,7 @@ Create configuration for frontend memcached configuration
 Determine the policy api version
 */}}
 {{- define "cortex.pdbVersion" -}}
-{{- if or (.Capabilities.APIVersions.Has "policy/v1/PodDisruptionBudget") (semverCompare ">=1.21" .Capabilities.KubeVersion.Version) -}}
+{{- if or (.Capabilities.APIVersions.Has "policy/v1/PodDisruptionBudget") (semverCompare ">=1.21-0" .Capabilities.KubeVersion.Version) -}}
 policy/v1
 {{- else -}}
 policy/v1beta1
@@ -153,7 +153,7 @@ Get volume of config secret of configMap
 Get cortex hpa version by k8s version
 */}}
 {{- define "cortex.hpaVersion" -}}
-{{- if or (.Capabilities.APIVersions.Has "autoscaling/v2/HorizontalPodAutoscaler") (semverCompare ">=1.23" .Capabilities.KubeVersion.Version) -}}
+{{- if or (.Capabilities.APIVersions.Has "autoscaling/v2/HorizontalPodAutoscaler") (semverCompare ">=1.23-0" .Capabilities.KubeVersion.Version) -}}
 autoscaling/v2
 {{- else -}}
 autoscaling/v2beta2