diff --git a/CHANGELOG.md b/CHANGELOG.md
index a1acb90def..d4a808f516 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -88,6 +88,15 @@ Adding a new version? You'll need three changes:
 - Removed support for deprecated `KongIngress` fields: `Proxy` and `Route`. Respective
   `Service` or `Ingress` annotations should be used instead. See [KIC Annotations reference].
   [#4760](https://github.com/Kong/kubernetes-ingress-controller/pull/4760)
+- Removed previously deprecated flags:
+  - `sync-rate-limit`: Use `--proxy-sync-seconds` instead
+  - `stderrthreshold`: Has no effect
+  - `update-status-on-shutdown`: Has no effect
+  - `kong-custom-entities-secret`: Has no effect
+  - `leader-elect`: DEPRECATED as of 2.1.0: leader election behavior is determined automatically based on the Kong database setting and this flag has no effect
+  - `enable-controller-ingress-extensionsv1beta1`: Has no effect
+  - `enable-controller-ingress-networkingv1beta1`: Has no effect
+  [#4770](https://github.com/Kong/kubernetes-ingress-controller/pull/4770)
 
 ### Fixed
 
diff --git a/internal/manager/config.go b/internal/manager/config.go
index 1ef08057a1..5e246bfa43 100644
--- a/internal/manager/config.go
+++ b/internal/manager/config.go
@@ -267,9 +267,6 @@ func (c *Config) FlagSet() *pflag.FlagSet {
 	flagSet.DurationVar(&c.Konnect.RefreshNodePeriod, "konnect-refresh-node-period", konnect.DefaultRefreshNodePeriod, "Period of uploading status of KIC and controlled kong gateway instances")
 
 	// Deprecated flags
-	_ = flagSet.Float32("sync-rate-limit", dataplane.DefaultSyncSeconds, "Use --proxy-sync-seconds instead")
-	_ = flagSet.MarkDeprecated("sync-rate-limit", "Use --proxy-sync-seconds instead")
-
 	flagSet.Var(flags.NewValidatedValue(&c.IngressService, namespacedNameFromFlagValue, nnTypeNameOverride), "publish-service", "Use --ingress-service instead")
 	_ = flagSet.MarkDeprecated("publish-service", "Use --ingress-service instead")
 	flagSet.Var(flags.NewValidatedValue(&c.IngressServiceUDP, namespacedNameFromFlagValue, nnTypeNameOverride), "publish-service-udp", "Use --ingress-service-udp instead")
@@ -279,24 +276,6 @@ func (c *Config) FlagSet() *pflag.FlagSet {
 	flagSet.StringSliceVar(&c.IngressAddressesUDP, "publish-status-address-udp", []string{}, "")
 	_ = flagSet.MarkDeprecated("publish-status-address-udp", "Use --ingress-address-udp instead")
 
-	_ = flagSet.Int("stderrthreshold", 0, "Has no effect and will be removed in future releases (see github issue #1297)")
-	_ = flagSet.MarkDeprecated("stderrthreshold", "Has no effect and will be removed in future releases (see github issue #1297)")
-
-	_ = flagSet.Bool("update-status-on-shutdown", false, "No longer has any effect and will be removed in a later release (see github issue #1304)")
-	_ = flagSet.MarkDeprecated("update-status-on-shutdown", "No longer has any effect and will be removed in a later release (see github issue #1304)")
-
-	_ = flagSet.String("kong-custom-entities-secret", "", "Will be removed in next major release.")
-	_ = flagSet.MarkDeprecated("kong-custom-entities-secret", "Will be removed in next major release.")
-
-	_ = flagSet.Bool("leader-elect", false, "DEPRECATED as of 2.1.0: leader election behavior is determined automatically based on the Kong database setting and this flag has no effect")
-	_ = flagSet.MarkDeprecated("leader-elect", "DEPRECATED as of 2.1.0: leader election behavior is determined automatically based on the Kong database setting and this flag has no effect")
-
-	_ = flagSet.Bool("enable-controller-ingress-extensionsv1beta1", true, "DEPRECATED: Enable the extensions/v1beta1 Ingress controller.")
-	_ = flagSet.MarkDeprecated("enable-controller-ingress-extensionsv1beta1", "DEPRECATED: Enable the extensions/v1beta1 Ingress controller.")
-
-	_ = flagSet.Bool("enable-controller-ingress-networkingv1beta1", true, "Enable the networking.k8s.io/v1beta1 Ingress controller.")
-	_ = flagSet.MarkDeprecated("enable-controller-ingress-networkingv1beta1", "Enable the networking.k8s.io/v1beta1 Ingress controller.")
-
 	c.flagSet = flagSet
 	return flagSet
 }