diff --git a/nebius/compute/v1/disk.proto b/nebius/compute/v1/disk.proto
index d7da67b..95804f3 100644
--- a/nebius/compute/v1/disk.proto
+++ b/nebius/compute/v1/disk.proto
@@ -136,7 +136,6 @@ message DiskEncryption {
     DISK_ENCRYPTION_UNSPECIFIED = 0;
 
     // Enables encryption using the platform's default root key from KMS.
-    // Available for blank disks only.
     // Available for disks with NETWORK_SSD_NON_REPLICATED and NETWORK_SSD_IO_M3 types only.
     DISK_ENCRYPTION_MANAGED = 1;
   }
diff --git a/nebius/compute/v1/instance.proto b/nebius/compute/v1/instance.proto
index 8228409..a3bf944 100644
--- a/nebius/compute/v1/instance.proto
+++ b/nebius/compute/v1/instance.proto
@@ -77,6 +77,8 @@ message InstanceSpec {
       ]
     }
   ];
+
+  ReservationPolicy reservation_policy = 23;
 }
 
 message PreemptibleSpec {
@@ -198,6 +200,8 @@ message InstanceStatus {
   oneof gpu_cluster_topology {
     InstanceStatusInfinibandTopologyPath infiniband_topology_path = 10;
   }
+
+  string reservation_id = 12;
 }
 
 enum InstanceRecoveryPolicy {
@@ -209,3 +213,27 @@ enum InstanceRecoveryPolicy {
 message InstanceStatusInfinibandTopologyPath {
   repeated string path = 1;
 }
+
+message ReservationPolicy {
+  enum Policy {
+    // 1) Will try to launch instance in any reservation_ids if provided.
+    // 2) Will try to launch instance in any of the available capacity block.
+    // 3) Will try to launch instance in PAYG if 1 & 2 are not satisfied.
+    AUTO = 0;
+
+    // The instance is launched only using on-demand (PAYG) capacity.
+    // No attempt is made to find or use a Capacity Block.
+    // It's an error to provide reservation_ids with policy = FORBID
+    FORBID = 1;
+
+    // 1) Will try to launch the instance in Capacity Blocks from reservation_ids if provided.
+    // 2) If reservation_ids are not provided will try to launch instance in suitable & available Capacity Block.
+    // 3) Fail otherwise.
+    STRICT = 2;
+  }
+
+  Policy policy = 1;
+
+  // Capacity block groups, order matters
+  repeated string reservation_ids = 2;
+}