diff --git a/docs/openapi/monitoring-api.json b/docs/openapi/monitoring-api.json
index ccd3413..d25734a 100644
--- a/docs/openapi/monitoring-api.json
+++ b/docs/openapi/monitoring-api.json
@@ -24474,14 +24474,12 @@
             ]
           },
           "timing": {
-            "type": "object",
-            "additionalProperties": {
-              "type": "object",
-              "description": "Request phase timing breakdown",
-              "nullable": true
-            },
-            "description": "Request phase timing breakdown",
-            "nullable": true
+            "nullable": true,
+            "allOf": [
+              {
+                "$ref": "#/components/schemas/TimingPhasesDto"
+              }
+            ]
           },
           "bodyTruncated": {
             "type": "boolean",
@@ -31653,6 +31651,54 @@
         },
         "description": "Event type to use for a test webhook delivery"
       },
+      "TimingPhasesDto": {
+        "type": "object",
+        "properties": {
+          "dns_ms": {
+            "type": "integer",
+            "description": "DNS resolution time in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 12
+          },
+          "tcp_ms": {
+            "type": "integer",
+            "description": "TCP connect time in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 18
+          },
+          "tls_ms": {
+            "type": "integer",
+            "description": "TLS handshake time in milliseconds (null for plain HTTP)",
+            "format": "int32",
+            "nullable": true,
+            "example": 34
+          },
+          "ttfb_ms": {
+            "type": "integer",
+            "description": "Time to first response byte in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 42
+          },
+          "download_ms": {
+            "type": "integer",
+            "description": "Response body download time in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 8
+          },
+          "total_ms": {
+            "type": "integer",
+            "description": "Total wall-clock request time in milliseconds",
+            "format": "int32",
+            "nullable": true,
+            "example": 114
+          }
+        },
+        "description": "Per-phase HTTP request timing breakdown (milliseconds)"
+      },
       "TlsInfoDto": {
         "type": "object",
         "properties": {
diff --git a/src/lib/api-zod.generated.ts b/src/lib/api-zod.generated.ts
index 9a50c15..bcc5c83 100644
--- a/src/lib/api-zod.generated.ts
+++ b/src/lib/api-zod.generated.ts
@@ -1511,10 +1511,21 @@ const TlsInfoDto = z
   })
   .partial()
   .strict();
+const TimingPhasesDto = z
+  .object({
+    dns_ms: z.number().int().nullable(),
+    tcp_ms: z.number().int().nullable(),
+    tls_ms: z.number().int().nullable(),
+    ttfb_ms: z.number().int().nullable(),
+    download_ms: z.number().int().nullable(),
+    total_ms: z.number().int().nullable(),
+  })
+  .partial()
+  .strict();
 const Http = z
   .object({
     check_type: z.literal("http"),
-    timing: z.record(z.object({}).partial().strict().nullable()).nullish(),
+    timing: TimingPhasesDto.nullish(),
     bodyTruncated: z.boolean().nullish(),
   })
   .strict();
@@ -3359,6 +3370,7 @@ export const schemas = {
   CategoryDto,
   ChartBucketDto,
   TlsInfoDto,
+  TimingPhasesDto,
   Http,
   Tcp,
   Icmp,
diff --git a/src/lib/api.generated.ts b/src/lib/api.generated.ts
index 03eed5b..bb7edce 100644
--- a/src/lib/api.generated.ts
+++ b/src/lib/api.generated.ts
@@ -3897,10 +3897,7 @@ export interface components {
              * @enum {string}
              */
             check_type: "http";
-            /** @description Request phase timing breakdown */
-            timing?: {
-                [key: string]: Record<string, never> | null;
-            } | null;
+            timing?: components["schemas"]["TimingPhasesDto"] | null;
             /** @description Whether the response body was truncated before storage */
             bodyTruncated?: boolean | null;
         };
@@ -6696,6 +6693,45 @@ export interface components {
             /** @description Event type to simulate (e.g. monitor.created); null uses a default */
             eventType?: string | null;
         };
+        /** @description Per-phase HTTP request timing breakdown (milliseconds) */
+        TimingPhasesDto: {
+            /**
+             * Format: int32
+             * @description DNS resolution time in milliseconds
+             * @example 12
+             */
+            dns_ms?: number | null;
+            /**
+             * Format: int32
+             * @description TCP connect time in milliseconds
+             * @example 18
+             */
+            tcp_ms?: number | null;
+            /**
+             * Format: int32
+             * @description TLS handshake time in milliseconds (null for plain HTTP)
+             * @example 34
+             */
+            tls_ms?: number | null;
+            /**
+             * Format: int32
+             * @description Time to first response byte in milliseconds
+             * @example 42
+             */
+            ttfb_ms?: number | null;
+            /**
+             * Format: int32
+             * @description Response body download time in milliseconds
+             * @example 8
+             */
+            download_ms?: number | null;
+            /**
+             * Format: int32
+             * @description Total wall-clock request time in milliseconds
+             * @example 114
+             */
+            total_ms?: number | null;
+        };
         /** @description TLS/SSL certificate details for HTTPS targets */
         TlsInfoDto: {
             /**