diff --git a/CHANGELOG.md b/CHANGELOG.md
index 74a4fedac..1fcdaab24 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## Release (2024-XX-XX)
 
+- `opensearch`: [v0.18.0](services/opensearch/CHANGELOG.md#v0180-2024-09-02)
+  - **Breaking changes:** `GetMetricsResponse` fields have changed data types
+    - `CpuLoadPercent`, `Load1`, `Load15` and `Load5` are now `*float64`
+    - `ParachuteDiskEphemeralActivated` and `ParachuteDiskPersistentActivated` are now `*bool`
 - `mariadb`: [v0.19.0](services/mariadb/CHANGELOG.md#v0190-2024-09-02)
   - **Breaking changes:** `GetMetricsResponse` fields have changed data types
     - `CpuLoadPercent`, `Load1`, `Load15` and `Load5` are now `*float64`
diff --git a/services/opensearch/CHANGELOG.md b/services/opensearch/CHANGELOG.md
index 7f7a0f506..f0e8a2009 100644
--- a/services/opensearch/CHANGELOG.md
+++ b/services/opensearch/CHANGELOG.md
@@ -1,3 +1,9 @@
+## v0.18.0 (2024-09-02)
+
+- **Breaking changes:** `GetMetricsResponse` fields have changed data types
+  - `CpuLoadPercent`, `Load1`, `Load15` and `Load5` are now `*float64`
+  - `ParachuteDiskEphemeralActivated` and `ParachuteDiskPersistentActivated` are now `*bool`
+
 ## v0.17.0 (2024-08-01)
 
 - **Feature:** `Plan` has a new field `SkuName`
diff --git a/services/opensearch/model_get_metrics_response.go b/services/opensearch/model_get_metrics_response.go
index 9ee621bcb..b10463ff3 100644
--- a/services/opensearch/model_get_metrics_response.go
+++ b/services/opensearch/model_get_metrics_response.go
@@ -14,9 +14,9 @@ package opensearch
 type GetMetricsResponse struct {
 	CpuIdleTime *int64 `json:"cpuIdleTime,omitempty"`
 	// REQUIRED
-	CpuLoadPercent *int64 `json:"cpuLoadPercent"`
-	CpuSystemTime  *int64 `json:"cpuSystemTime,omitempty"`
-	CpuUserTime    *int64 `json:"cpuUserTime,omitempty"`
+	CpuLoadPercent *float64 `json:"cpuLoadPercent"`
+	CpuSystemTime  *int64   `json:"cpuSystemTime,omitempty"`
+	CpuUserTime    *int64   `json:"cpuUserTime,omitempty"`
 	// REQUIRED
 	DiskEphemeralTotal *int64 `json:"diskEphemeralTotal"`
 	// REQUIRED
@@ -26,17 +26,17 @@ type GetMetricsResponse struct {
 	// REQUIRED
 	DiskPersistentUsed *int64 `json:"diskPersistentUsed"`
 	// REQUIRED
-	Load1 *int64 `json:"load1"`
+	Load1 *float64 `json:"load1"`
 	// REQUIRED
-	Load15 *int64 `json:"load15"`
+	Load15 *float64 `json:"load15"`
 	// REQUIRED
-	Load5 *int64 `json:"load5"`
+	Load5 *float64 `json:"load5"`
 	// REQUIRED
 	MemoryTotal *int64 `json:"memoryTotal"`
 	// REQUIRED
 	MemoryUsed *int64 `json:"memoryUsed"`
 	// REQUIRED
-	ParachuteDiskEphemeralActivated *int64 `json:"parachuteDiskEphemeralActivated"`
+	ParachuteDiskEphemeralActivated *bool `json:"parachuteDiskEphemeralActivated"`
 	// REQUIRED
 	ParachuteDiskEphemeralTotal *int64 `json:"parachuteDiskEphemeralTotal"`
 	// REQUIRED
@@ -46,7 +46,7 @@ type GetMetricsResponse struct {
 	// REQUIRED
 	ParachuteDiskEphemeralUsedThreshold *int64 `json:"parachuteDiskEphemeralUsedThreshold"`
 	// REQUIRED
-	ParachuteDiskPersistentActivated *int64 `json:"parachuteDiskPersistentActivated"`
+	ParachuteDiskPersistentActivated *bool `json:"parachuteDiskPersistentActivated"`
 	// REQUIRED
 	ParachuteDiskPersistentTotal *int64 `json:"parachuteDiskPersistentTotal"`
 	// REQUIRED