diff --git a/internal/firewall/attachment_resource.go b/internal/firewall/attachment_resource.go
index 1d13cd755..4d79c3194 100644
--- a/internal/firewall/attachment_resource.go
+++ b/internal/firewall/attachment_resource.go
@@ -216,7 +216,7 @@ func (a *attachment) ToResourceData(d *schema.ResourceData) {
 	if len(a.ServerIDs) > 0 {
 		vals := make([]interface{}, len(a.ServerIDs))
 		for i, id := range a.ServerIDs {
-			vals[i] = int(id)
+			vals[i] = util.CastInt(id)
 		}
 		f := d.Get("server_ids").(*schema.Set).F // Returns a default value if server_ids is not present in HCL.
 		srvIDs = schema.NewSet(f, vals)
@@ -233,7 +233,7 @@ func (a *attachment) ToResourceData(d *schema.ResourceData) {
 	}
 	d.Set("label_selectors", lSels)
 
-	d.Set("firewall_id", int(a.FirewallID))
+	d.Set("firewall_id", util.CastInt(a.FirewallID))
 	d.SetId(util.FormatID(a.FirewallID))
 }
 
diff --git a/internal/loadbalancer/resource_service.go b/internal/loadbalancer/resource_service.go
index 80a8612f2..67bff1266 100644
--- a/internal/loadbalancer/resource_service.go
+++ b/internal/loadbalancer/resource_service.go
@@ -367,7 +367,7 @@ func setLoadBalancerServiceSchema(d *schema.ResourceData, lb *hcloud.LoadBalance
 		if len(svc.HTTP.Certificates) > 0 {
 			certIDs := make([]int, len(svc.HTTP.Certificates))
 			for i := 0; i < len(svc.HTTP.Certificates); i++ {
-				certIDs[i] = int(svc.HTTP.Certificates[i].ID)
+				certIDs[i] = util.CastInt(svc.HTTP.Certificates[i].ID)
 			}
 			httpMap["certificates"] = certIDs
 		}
diff --git a/internal/server/resource.go b/internal/server/resource.go
index d196f5221..72f116c70 100644
--- a/internal/server/resource.go
+++ b/internal/server/resource.go
@@ -1133,7 +1133,7 @@ func setServerSchema(d *schema.ResourceData, s *hcloud.Server) {
 func getServerAttributes(d *schema.ResourceData, s *hcloud.Server) map[string]interface{} {
 	firewallIDs := make([]int, len(s.PublicNet.Firewalls))
 	for i, firewall := range s.PublicNet.Firewalls {
-		firewallIDs[i] = int(firewall.Firewall.ID)
+		firewallIDs[i] = util.CastInt(firewall.Firewall.ID)
 	}
 
 	res := map[string]interface{}{
@@ -1189,7 +1189,7 @@ func getServerAttributes(d *schema.ResourceData, s *hcloud.Server) map[string]in
 	}
 
 	if s.PlacementGroup != nil {
-		res["placement_group_id"] = int(s.PlacementGroup.ID)
+		res["placement_group_id"] = util.CastInt(s.PlacementGroup.ID)
 	} else {
 		res["placement_group_id"] = nil
 	}
diff --git a/internal/snapshot/resource.go b/internal/snapshot/resource.go
index abf9593cc..1391001fc 100644
--- a/internal/snapshot/resource.go
+++ b/internal/snapshot/resource.go
@@ -187,7 +187,7 @@ func resourceSnapshotIsNotFound(err error, d *schema.ResourceData) bool {
 func setSnapshotSchema(d *schema.ResourceData, s *hcloud.Image) {
 	d.SetId(util.FormatID(s.ID))
 	if s.CreatedFrom != nil {
-		d.Set("server_id", int(s.CreatedFrom.ID))
+		d.Set("server_id", util.CastInt(s.CreatedFrom.ID))
 	}
 	d.Set("description", s.Description)
 	d.Set("labels", s.Labels)
diff --git a/internal/util/resourceutil/id.go b/internal/util/resourceutil/id.go
index 938b80713..80fc6a380 100644
--- a/internal/util/resourceutil/id.go
+++ b/internal/util/resourceutil/id.go
@@ -6,6 +6,7 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/diag"
 	"github.com/hashicorp/terraform-plugin-framework/path"
 	"github.com/hashicorp/terraform-plugin-framework/types"
+
 	"github.com/hetznercloud/terraform-provider-hcloud/internal/util"
 )