diff --git a/stackit/internal/services/ske/cluster/resource.go b/stackit/internal/services/ske/cluster/resource.go
index f6dca5910..3d4e9a594 100644
--- a/stackit/internal/services/ske/cluster/resource.go
+++ b/stackit/internal/services/ske/cluster/resource.go
@@ -551,7 +551,7 @@ func (r *clusterResource) Schema(_ context.Context, _ resource.SchemaRequest, re
 							Description: "Full OS image version used. For example, if 3815.2 was set in `os_version_min`, this value may result to 3815.2.2. " + SKEUpdateDoc,
 							Computed:    true,
 							PlanModifiers: []planmodifier.String{
-								stringplanmodifierUtils.UseStateForUnknownIf(stringplanmodifierUtils.StringUnchanged(path.Root("os_version_min")), "sets `UseStateForUnknown` only if `os_version_min` has not changed"),
+								stringplanmodifierUtils.UseStateForUnknownIf(skeUtils.HasOsVersionMinChanged, "sets `UseStateForUnknown` only if `os_version_min` has not changed"), //nolint:staticcheck // temporary fix for issue with StringUnchanged
 							},
 						},
 						"volume_type": schema.StringAttribute{
diff --git a/stackit/internal/services/ske/utils/util.go b/stackit/internal/services/ske/utils/util.go
index ef4581caa..6b4aca343 100644
--- a/stackit/internal/services/ske/utils/util.go
+++ b/stackit/internal/services/ske/utils/util.go
@@ -5,11 +5,14 @@ import (
 	"fmt"
 
 	"github.com/hashicorp/terraform-plugin-framework/diag"
+	"github.com/hashicorp/terraform-plugin-framework/resource/schema/planmodifier"
+	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/stackitcloud/stackit-sdk-go/core/config"
 	ske "github.com/stackitcloud/stackit-sdk-go/services/ske/v2api"
 
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/core"
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils"
+	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils/planmodifiers/stringplanmodifier"
 )
 
 func ConfigureClient(ctx context.Context, providerData *core.ProviderData, diags *diag.Diagnostics) *ske.APIClient {
@@ -42,3 +45,27 @@ func IsEmptyExtension(extension *ske.Extension) bool {
 	}
 	return false
 }
+
+// Deprecated: HasOsVersionMinChanged
+func HasOsVersionMinChanged(ctx context.Context, request planmodifier.StringRequest, response *stringplanmodifier.UseStateForUnknownFuncResponse) { // nolint:gocritic // function signature required by Terraform
+	dependencyPath := request.Path.ParentPath().AtName("os_version_min")
+
+	var minVersionPlan types.String
+	diags := request.Plan.GetAttribute(ctx, dependencyPath, &minVersionPlan)
+	response.Diagnostics.Append(diags...)
+	if response.Diagnostics.HasError() {
+		return
+	}
+
+	var minVersionState types.String
+	diags = request.State.GetAttribute(ctx, dependencyPath, &minVersionState)
+	response.Diagnostics.Append(diags...)
+	if response.Diagnostics.HasError() {
+		return
+	}
+
+	if minVersionState == minVersionPlan {
+		response.UseStateForUnknown = true
+		return
+	}
+}