diff --git a/go.mod b/go.mod
index 2c03dea12..7a1ceafbc 100644
--- a/go.mod
+++ b/go.mod
@@ -14,7 +14,7 @@ require (
 	github.com/hashicorp/terraform-plugin-testing v1.16.0
 	github.com/stackitcloud/stackit-sdk-go/core v0.26.0
 	github.com/stackitcloud/stackit-sdk-go/services/alb v0.17.1
-	github.com/stackitcloud/stackit-sdk-go/services/albwaf v0.13.1
+	github.com/stackitcloud/stackit-sdk-go/services/albwaf v0.13.2
 	github.com/stackitcloud/stackit-sdk-go/services/cdn v1.20.0
 	github.com/stackitcloud/stackit-sdk-go/services/certificates v1.9.1
 	github.com/stackitcloud/stackit-sdk-go/services/dns v0.22.1
@@ -34,7 +34,7 @@ require (
 	github.com/stackitcloud/stackit-sdk-go/services/objectstorage v1.9.1
 	github.com/stackitcloud/stackit-sdk-go/services/observability v0.24.0
 	github.com/stackitcloud/stackit-sdk-go/services/opensearch v1.3.0
-	github.com/stackitcloud/stackit-sdk-go/services/postgresflex v1.12.0
+	github.com/stackitcloud/stackit-sdk-go/services/postgresflex v1.13.0
 	github.com/stackitcloud/stackit-sdk-go/services/rabbitmq v1.3.0
 	github.com/stackitcloud/stackit-sdk-go/services/redis v1.3.0
 	github.com/stackitcloud/stackit-sdk-go/services/resourcemanager v0.24.2
diff --git a/go.sum b/go.sum
index e7963bec7..aa95d0973 100644
--- a/go.sum
+++ b/go.sum
@@ -157,8 +157,8 @@ github.com/stackitcloud/stackit-sdk-go/core v0.26.0 h1:jQEb9gkehfp6VCP6TcYk7BI10
 github.com/stackitcloud/stackit-sdk-go/core v0.26.0/go.mod h1:WU1hhxnjXw2EV7CYa1nlEvNpMiRY6CvmIOaHuL3pOaA=
 github.com/stackitcloud/stackit-sdk-go/services/alb v0.17.1 h1:YOMgUO/0/FZPxOmkKIbEIjzpzJ2VFhfPn3ErID9qC40=
 github.com/stackitcloud/stackit-sdk-go/services/alb v0.17.1/go.mod h1:eK6oRB5Tmpt6KbXQ4UYBGg2LgW5bPtVoncL9E8JSRww=
-github.com/stackitcloud/stackit-sdk-go/services/albwaf v0.13.1 h1:NsUOizMbRrIyvxHGLzwL6WKHs1/CWXoFV6d1wPI6YsM=
-github.com/stackitcloud/stackit-sdk-go/services/albwaf v0.13.1/go.mod h1:4M9G1I64kZwlXO32ZoIpt0GAN4SpZ1SYerwCVVIBGoE=
+github.com/stackitcloud/stackit-sdk-go/services/albwaf v0.13.2 h1:zY0ArhTg++8oOAlytCRck3u41ZakAvU74ZkwBuMnipg=
+github.com/stackitcloud/stackit-sdk-go/services/albwaf v0.13.2/go.mod h1:4M9G1I64kZwlXO32ZoIpt0GAN4SpZ1SYerwCVVIBGoE=
 github.com/stackitcloud/stackit-sdk-go/services/authorization v0.15.3 h1:YEuymF48gnBNqBsraBN5pycBDEyXcFYy/2bCdF+H3eY=
 github.com/stackitcloud/stackit-sdk-go/services/authorization v0.15.3/go.mod h1:T/JF25XGJ3GqER/1L2N//DgY8x5tY7gA3N+/0nvmOWY=
 github.com/stackitcloud/stackit-sdk-go/services/cdn v1.20.0 h1:p/8f/+Z+OtqX0cau2CqkidjfO3FkHPc7ymdrF1zv7UY=
@@ -199,8 +199,8 @@ github.com/stackitcloud/stackit-sdk-go/services/observability v0.24.0 h1:KhuWPXr
 github.com/stackitcloud/stackit-sdk-go/services/observability v0.24.0/go.mod h1:0fEZQHm729mBdvg4sNrAhM6KmHROHJSeS2FwCMRk46k=
 github.com/stackitcloud/stackit-sdk-go/services/opensearch v1.3.0 h1:j8327l7QFhdL4ETg3kV9Q7Jle5GFYtfxMkBS3IvalDo=
 github.com/stackitcloud/stackit-sdk-go/services/opensearch v1.3.0/go.mod h1:L+NlfC1hilLOqlLLukCj/UDnxlnNrc/oMikcw3Ansyw=
-github.com/stackitcloud/stackit-sdk-go/services/postgresflex v1.12.0 h1:elIyrDVSYlEtigFO82SWnpfuJZdpv0b2SwvL3M+z9dA=
-github.com/stackitcloud/stackit-sdk-go/services/postgresflex v1.12.0/go.mod h1:yzlakB+f8ur4yAHR6lyCABO+HcEtZG3G2Faj6m5/uW8=
+github.com/stackitcloud/stackit-sdk-go/services/postgresflex v1.13.0 h1:o8+bH3763G5oU1Y8Bf5nkQ8kzqFO7su0VUpeSGKdoPY=
+github.com/stackitcloud/stackit-sdk-go/services/postgresflex v1.13.0/go.mod h1:yzlakB+f8ur4yAHR6lyCABO+HcEtZG3G2Faj6m5/uW8=
 github.com/stackitcloud/stackit-sdk-go/services/rabbitmq v1.3.0 h1:jX0fN80M87/O8RVA+kNX1yioj+y30dHd6VrFC8OrRTA=
 github.com/stackitcloud/stackit-sdk-go/services/rabbitmq v1.3.0/go.mod h1:TwfVVynB/+AKbccSOLk2qZpPL1tdK43BBAiACP6EtSg=
 github.com/stackitcloud/stackit-sdk-go/services/redis v1.3.0 h1:bcSoAiJc6rClLfYOiPPsEwT9j3Ci6fglljGkepROq4A=
diff --git a/stackit/internal/services/postgresflex/instance/resource.go b/stackit/internal/services/postgresflex/instance/resource.go
index ccf219812..565f21f1b 100644
--- a/stackit/internal/services/postgresflex/instance/resource.go
+++ b/stackit/internal/services/postgresflex/instance/resource.go
@@ -1079,7 +1079,7 @@ func toCreatePayload(model *Model, acl []string, flavor *flavorModel, storage *s
 		Encryption:     encryptionPayload,
 		RetentionDays:  retentionDays,
 		Storage: postgresflex.StorageCreate{
-			Class: conversion.StringValueToPointer(storage.Class),
+			Class: storage.Class.ValueString(),
 			Size:  storage.Size.ValueInt64(),
 		},
 		Version: model.Version.ValueString(),
diff --git a/stackit/internal/services/postgresflex/instance/resource_test.go b/stackit/internal/services/postgresflex/instance/resource_test.go
index 75de809da..89974d2d9 100644
--- a/stackit/internal/services/postgresflex/instance/resource_test.go
+++ b/stackit/internal/services/postgresflex/instance/resource_test.go
@@ -467,7 +467,7 @@ func TestToCreatePayload(t *testing.T) {
 				FlavorId:       "flavor_id",
 				Name:           "name",
 				Storage: postgresflex.StorageCreate{
-					Class: new("class"),
+					Class: "class",
 					Size:  34,
 				},
 				Version: "version",
@@ -509,7 +509,7 @@ func TestToCreatePayload(t *testing.T) {
 				FlavorId:       "flavor_id",
 				Name:           "",
 				Storage: postgresflex.StorageCreate{
-					Class: nil,
+					Class: "",
 					Size:  0,
 				},
 				Version: "",