diff --git a/docs/resources/instance.md b/docs/resources/instance.md
index 2cc54b4..ef88d97 100644
--- a/docs/resources/instance.md
+++ b/docs/resources/instance.md
@@ -52,6 +52,7 @@ resource "genesiscloud_instance" "example" {
   - The string length must be at least 16.
 - `placement_option` (String) The placement option identifier in which instances are physically located relative to each other within a zone. For example A or B.
   - If the value of this attribute changes, Terraform will destroy and recreate the resource.
+- `reservation_id` (String) The id of the reservation the instance is associated with.
 - `security_group_ids` (Set of String) The security groups of the instance. If not provided will be set to the default security group.
 - `ssh_key_ids` (Set of String) The ssh keys of the instance.
   - If the value of this attribute changes, Terraform will destroy and recreate the resource.
diff --git a/go.mod b/go.mod
index 1dd40b5..c0c7837 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.21
 toolchain go1.22.1
 
 require (
-	github.com/genesiscloud/genesiscloud-go v1.0.7
+	github.com/genesiscloud/genesiscloud-go v1.0.8
 	github.com/hashicorp/go-retryablehttp v0.7.6
 	github.com/hashicorp/terraform-plugin-docs v0.19.2
 	github.com/hashicorp/terraform-plugin-framework v1.8.0
diff --git a/go.sum b/go.sum
index edb4317..1861558 100644
--- a/go.sum
+++ b/go.sum
@@ -47,8 +47,8 @@ github.com/fatih/color v1.16.0 h1:zmkK9Ngbjj+K0yRhTVONQh1p/HknKYSlNT+vZCzyokM=
 github.com/fatih/color v1.16.0/go.mod h1:fL2Sau1YI5c0pdGEVCbKQbLXB6edEj1ZgiY4NijnWvE=
 github.com/frankban/quicktest v1.14.3 h1:FJKSZTDHjyhriyC81FLQ0LY93eSai0ZyR/ZIkd3ZUKE=
 github.com/frankban/quicktest v1.14.3/go.mod h1:mgiwOwqx65TmIk1wJ6Q7wvnVMocbUorkibMOrVTHZps=
-github.com/genesiscloud/genesiscloud-go v1.0.7 h1:bew0WlAeZjxJeQ8fGDsk9KVtI2yoPwiBe5PRzMY1Zdw=
-github.com/genesiscloud/genesiscloud-go v1.0.7/go.mod h1:OAMjSCejQTC4BBLWXleegT/fg+X46SZ6t/vW9RPtXWg=
+github.com/genesiscloud/genesiscloud-go v1.0.8 h1:HiRHHaST1UOgsIAko739LPICB9SkgafalJHVu26DdKk=
+github.com/genesiscloud/genesiscloud-go v1.0.8/go.mod h1:OAMjSCejQTC4BBLWXleegT/fg+X46SZ6t/vW9RPtXWg=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 h1:+zs/tPmkDkHx3U66DAb0lQFJrpS6731Oaa12ikc+DiI=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376/go.mod h1:an3vInlBmSxCcxctByoQdvwPiA7DTK7jaaFDBTtu0ic=
 github.com/go-git/go-billy/v5 v5.5.0 h1:yEY4yhzCDuMGSv83oGxiBotRzhwhNr8VZyphhiu+mTU=
diff --git a/internal/provider/instance_resource.go b/internal/provider/instance_resource.go
index 0455101..5f6b628 100644
--- a/internal/provider/instance_resource.go
+++ b/internal/provider/instance_resource.go
@@ -212,6 +212,10 @@ func (r *InstanceResource) Schema(ctx context.Context, req resource.SchemaReques
 
 				// TODO: Update of this field does not work in pulumi
 			}),
+			"reservation_id": resourceenhancer.Attribute(ctx, schema.StringAttribute{
+				MarkdownDescription: "The id of the reservation the instance is associated with.",
+				Optional:            true,
+			}),
 
 			// Internal
 			"timeouts": timeouts.AttributesAll(ctx),
@@ -260,6 +264,10 @@ func (r *InstanceResource) Create(ctx context.Context, req resource.CreateReques
 		body.FloatingIp = data.FloatingIpId.ValueStringPointer()
 	}
 
+	if !data.ReservationId.IsNull() && !data.ReservationId.IsUnknown() {
+		body.ReservationId = data.ReservationId.ValueStringPointer()
+	}
+
 	if data.Metadata != nil {
 		body.Metadata = &struct {
 			StartupScript *string                        `json:"startup_script,omitempty"`
@@ -459,6 +467,10 @@ func (r *InstanceResource) Update(ctx context.Context, req resource.UpdateReques
 		body.DiskSize = diskSize
 	}
 
+	if !data.ReservationId.IsNull() && !data.ReservationId.IsUnknown() {
+		body.ReservationId = data.ReservationId.ValueStringPointer()
+	}
+
 	instanceId := data.Id.ValueString()
 
 	response, err := r.client.UpdateInstanceWithResponse(ctx, instanceId, body)
diff --git a/internal/provider/instance_types.go b/internal/provider/instance_types.go
index a5f4061..6facee2 100644
--- a/internal/provider/instance_types.go
+++ b/internal/provider/instance_types.go
@@ -79,6 +79,9 @@ type InstanceResourceModel struct {
 	// FloatingIp The floating IP of the instance.
 	FloatingIpId types.String `tfsdk:"floating_ip_id"`
 
+	// ReservationId The id of the reservation the instance is associated with.
+	ReservationId types.String `tfsdk:"reservation_id"`
+
 	// Internal
 
 	// Timeouts The resource timeouts
@@ -133,6 +136,10 @@ func (data *InstanceResourceModel) PopulateFromClientResponse(ctx context.Contex
 		data.FloatingIpId = types.StringValue(instance.FloatingIp.Id)
 	}
 
+	if instance.ReservationId != nil {
+		data.ReservationId = types.StringValue(*instance.ReservationId)
+	}
+
 	if instance.DiskSize != nil {
 		data.DiskSize = types.Int64Value(int64(*instance.DiskSize))
 	}