diff --git a/renderdoc/driver/vulkan/vk_core.cpp b/renderdoc/driver/vulkan/vk_core.cpp
index 4d2312383..dce138483 100644
--- a/renderdoc/driver/vulkan/vk_core.cpp
+++ b/renderdoc/driver/vulkan/vk_core.cpp
@@ -724,6 +724,9 @@ static const VkExtensionProperties supportedExtensions[] = {
         VK_KHR_DISPLAY_SWAPCHAIN_EXTENSION_NAME, VK_KHR_DISPLAY_SWAPCHAIN_SPEC_VERSION,
     },
 #endif
+    {
+        VK_KHR_MAINTENANCE1_EXTENSION_NAME, VK_KHR_MAINTENANCE1_SPEC_VERSION,
+    },
     {
         VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_EXTENSION_NAME,
         VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_SPEC_VERSION,
diff --git a/renderdoc/driver/vulkan/vk_core.h b/renderdoc/driver/vulkan/vk_core.h
index 2dcf07dc2..29699d61b 100644
--- a/renderdoc/driver/vulkan/vk_core.h
+++ b/renderdoc/driver/vulkan/vk_core.h
@@ -1403,4 +1403,8 @@ public:
       VkImageUsageFlags usage, VkImageCreateFlags flags,
       VkExternalMemoryHandleTypeFlagsNV externalHandleType,
       VkExternalImageFormatPropertiesNV *pExternalImageFormatProperties);
+
+  // VK_KHR_maintenance1
+  void vkTrimCommandPoolKHR(VkDevice device, VkCommandPool commandPool,
+                            VkCommandPoolTrimFlagsKHR flags);
 };
diff --git a/renderdoc/driver/vulkan/vk_hookset_defs.h b/renderdoc/driver/vulkan/vk_hookset_defs.h
index 57cb986b1..4c8ce4db1 100644
--- a/renderdoc/driver/vulkan/vk_hookset_defs.h
+++ b/renderdoc/driver/vulkan/vk_hookset_defs.h
@@ -265,7 +265,8 @@
   CheckExt(VK_KHR_display_swapchain);    \
   CheckExt(VK_NV_external_memory);       \
   CheckExt(VK_NV_external_memory_win32); \
-  CheckExt(VK_NV_win32_keyed_mutex);
+  CheckExt(VK_NV_win32_keyed_mutex);     \
+  CheckExt(VK_KHR_maintenance1);
 
 #define HookInitVulkanInstanceExts()                                             \
   HookInitExtension(VK_KHR_surface, DestroySurfaceKHR);                          \
@@ -299,6 +300,7 @@
   HookInitExtension(VK_KHR_swapchain, AcquireNextImageKHR);               \
   HookInitExtension(VK_KHR_swapchain, QueuePresentKHR);                   \
   HookInitExtension(VK_KHR_display_swapchain, CreateSharedSwapchainsKHR); \
+  HookInitExtension(VK_KHR_maintenance1, TrimCommandPoolKHR);             \
   HookInitDevice_PlatformSpecific()
 
 #define DefineHooks()                                                                                \
@@ -651,6 +653,8 @@
               VkImageUsageFlags, usage, VkImageCreateFlags, flags,                                   \
               VkExternalMemoryHandleTypeFlagsNV, externalHandleType,                                 \
               VkExternalImageFormatPropertiesNV *, pExternalImageFormatProperties);                  \
+  HookDefine3(void, vkTrimCommandPoolKHR, VkDevice, device, VkCommandPool, commandPool,              \
+              VkCommandPoolTrimFlagsKHR, flags);                                                     \
   HookDefine_PlatformSpecific()
 
 struct VkLayerInstanceDispatchTableExtended : VkLayerInstanceDispatchTable
diff --git a/renderdoc/driver/vulkan/wrappers/vk_cmd_funcs.cpp b/renderdoc/driver/vulkan/wrappers/vk_cmd_funcs.cpp
index e3e766456..618fc5e59 100644
--- a/renderdoc/driver/vulkan/wrappers/vk_cmd_funcs.cpp
+++ b/renderdoc/driver/vulkan/wrappers/vk_cmd_funcs.cpp
@@ -377,6 +377,12 @@ VkResult WrappedVulkan::vkResetCommandPool(VkDevice device, VkCommandPool cmdPoo
   return ObjDisp(device)->ResetCommandPool(Unwrap(device), Unwrap(cmdPool), flags);
 }
 
+void WrappedVulkan::vkTrimCommandPoolKHR(VkDevice device, VkCommandPool commandPool,
+                                         VkCommandPoolTrimFlagsKHR flags)
+{
+  return ObjDisp(device)->TrimCommandPoolKHR(Unwrap(device), Unwrap(commandPool), flags);
+}
+
 // Command buffer functions
 
 VkResult WrappedVulkan::vkAllocateCommandBuffers(VkDevice device,