diff --git a/config/roblox_compatibility.json b/config/roblox_compatibility.json
index 7cba285..bd82ac5 100644
--- a/config/roblox_compatibility.json
+++ b/config/roblox_compatibility.json
@@ -42,6 +42,17 @@
       "allow_host_abi_bridges": true,
       "allow_host_constructor_replay": true,
       "reason": "Verified 2026-07-16 on the current host: independently signature-matched native allocator and pre-JNI state, 3479 constructors replayed without recovery, JNI_OnLoad and ASMA/V2 startup, 2988 Vulkan shaders, a real vkQueuePresentKHR, and explicit lifecycle teardown to Stopped; legacy executable patches and signal recovery remain disabled."
+    },
+    {
+      "version_name": "2.734.917",
+      "version_code": 2908,
+      "elf_build_id": "63c5109637b7d7b2bdb8ed8f858023ff5ef49326",
+      "status": "supported",
+      "default_allowed": true,
+      "allow_legacy_binary_patches": false,
+      "allow_host_abi_bridges": true,
+      "allow_host_constructor_replay": true,
+      "reason": "Verified 2026-08-14 on the current host: the machine-derived exact-Build-ID profile passed two isolated no-recovery Tier C Vulkan canaries; legacy executable patches and signal recovery remain disabled."
     }
   ]
 }
diff --git a/src/compat/host_abi_profile.cc b/src/compat/host_abi_profile.cc
index 36185c5..0b3ae91 100644
--- a/src/compat/host_abi_profile.cc
+++ b/src/compat/host_abi_profile.cc
@@ -6,6 +6,31 @@ namespace mocktail::compat {
 namespace {
 
 constexpr HostAbiProfile kProfiles[] = {
+    // Roblox 2.734.917. This exact Build-ID profile was machine-derived from
+    // the verified reference and passed two isolated no-recovery Tier C Vulkan
+    // canaries with native constructors, JNI startup, presentation, and
+    // controlled lifecycle teardown.
+    {"63c5109637b7d7b2bdb8ed8f858023ff5ef49326",
+     {{{0x1cf69e2, HostBridgeKind::kAllocate, "small-allocate"},
+       {0x1cf9c3a, HostBridgeKind::kUsableSize, "usable-size"},
+       {0x21af33f, HostBridgeKind::kReallocate, "reallocate"},
+       {0x1cf677e, HostBridgeKind::kAllocate, "allocate"},
+       {0x1d12197, HostBridgeKind::kAlignedAllocate,
+        "aligned-allocate-direct"},
+       {0x1cfa1d9, HostBridgeKind::kFree, "free"}}},
+     6,
+     {0x7571570, 0x767e428, 0x7ad47e8, 0x400, 0x1cf6df8, 0x1d82be7,
+      0x7a10730, 0x7a107c0, 0x400000},
+     {0x1cf677e, 0x1cfa1d9},
+     0x6f78a18,
+     3556,
+     {{{2, 3}, {5, 3556}}},
+     2,
+     {{{2, 3556}}},
+     1,
+     2,
+     {0x21b1889, 0x7a14898},
+     HostAllocatorStrategy::kNativeMimalloc},
     // Roblox 2.727.1199. Every function and state slot below was matched
     // independently against the previous supported payload by normalized
     // instruction signatures and RIP-relative references. The payload keeps
diff --git a/tests/build_profile_test.cc b/tests/build_profile_test.cc
index 03d7138..95682cf 100644
--- a/tests/build_profile_test.cc
+++ b/tests/build_profile_test.cc
@@ -62,6 +62,21 @@ TEST(BuildProfileTest, Payload2628IsSupportedWithoutBinaryPatches) {
   EXPECT_FALSE(result.profile->fmod_output_device_bridge.has_value());
 }
 
+TEST(BuildProfileTest, Payload2908IsSupportedWithoutBinaryPatches) {
+  const ProfileLookupResult result = FindBuildProfile(
+      kManifestPath, "63c5109637b7d7b2bdb8ed8f858023ff5ef49326");
+
+  ASSERT_TRUE(result) << result.error;
+  ASSERT_TRUE(result.profile.has_value());
+  EXPECT_EQ(result.profile->version_name, "2.734.917");
+  EXPECT_EQ(result.profile->version_code, 2908);
+  EXPECT_EQ(result.profile->status, BuildStatus::kSupported);
+  EXPECT_TRUE(result.profile->default_allowed);
+  EXPECT_FALSE(result.profile->allow_legacy_binary_patches);
+  EXPECT_TRUE(result.profile->allow_host_abi_bridges);
+  EXPECT_TRUE(result.profile->allow_host_constructor_replay);
+}
+
 TEST(BuildProfileTest, ReportsUnknownBuildWithoutInventingProfile) {
   const ProfileLookupResult result = FindBuildProfile(
       kManifestPath, "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
diff --git a/tests/host_abi_profile_test.cc b/tests/host_abi_profile_test.cc
index a40bf29..fa7c1fa 100644
--- a/tests/host_abi_profile_test.cc
+++ b/tests/host_abi_profile_test.cc
@@ -28,6 +28,30 @@
 namespace mocktail::compat {
 namespace {
 
+TEST(HostAbiProfileTest, Supported2908HasExactDerivedBoundaries) {
+  const HostAbiProfile* profile =
+      FindHostAbiProfile("63c5109637b7d7b2bdb8ed8f858023ff5ef49326");
+
+  ASSERT_NE(profile, nullptr);
+  ASSERT_EQ(profile->bridge_entry_count, 6U);
+  EXPECT_EQ(profile->bridge_entries[0].rva, 0x1cf69e2U);
+  EXPECT_EQ(profile->bridge_entries[5].rva, 0x1cfa1d9U);
+  EXPECT_EQ(profile->data_seeds.allocator_object_slot, 0x7571570U);
+  EXPECT_EQ(profile->native_allocator.allocate, 0x1cf677eU);
+  EXPECT_EQ(profile->native_allocator.deallocate, 0x1cfa1d9U);
+  EXPECT_EQ(profile->init_array_offset, 0x6f78a18U);
+  EXPECT_EQ(profile->init_array_count, 3556U);
+  EXPECT_TRUE(profile->HasValidConstructorRanges());
+  EXPECT_EQ(profile->ConstructorRangeBegin(), 2U);
+  EXPECT_EQ(profile->ConstructorRangeEndExclusive(), 3556U);
+  EXPECT_TRUE(profile->HasValidNativeMimallocConstructorRanges());
+  EXPECT_EQ(profile->native_pre_jni_bootstrap.registry_initializer,
+            0x21b1889U);
+  EXPECT_EQ(profile->native_pre_jni_bootstrap.registry_slot, 0x7a14898U);
+  EXPECT_EQ(profile->default_allocator_strategy,
+            HostAllocatorStrategy::kNativeMimalloc);
+}
+
 TEST(HostAbiProfileTest, Supported2628HasExactResearchedBoundaries) {
   const HostAbiProfile* profile =
       FindHostAbiProfile("1686400865ae0e408cd7bd67de7a439625c6fd13");