diff --git a/pkg/abi/nvgpu/uvm.go b/pkg/abi/nvgpu/uvm.go
index c5b3d870b..424b9be8d 100644
--- a/pkg/abi/nvgpu/uvm.go
+++ b/pkg/abi/nvgpu/uvm.go
@@ -41,6 +41,7 @@ const (
 	UVM_TOOLS_READ_PROCESS_MEMORY      = 62
 	UVM_TOOLS_WRITE_PROCESS_MEMORY     = 63
 	UVM_MAP_DYNAMIC_PARALLELISM_REGION = 65
+	UVM_UNMAP_EXTERNAL                 = 66
 	UVM_ALLOC_SEMAPHORE_POOL           = 68
 	UVM_VALIDATE_VA_RANGE              = 72
 	UVM_CREATE_EXTERNAL_RANGE          = 73
@@ -304,6 +305,15 @@ type UVM_MAP_DYNAMIC_PARALLELISM_REGION_PARAMS struct {
 	Pad0     [4]byte
 }
 
+// +marshal
+type UVM_UNMAP_EXTERNAL_PARAMS struct {
+	Base     uint64
+	Length   uint64
+	GPUUUID  NvUUID
+	RMStatus uint32
+	Pad0     [4]byte
+}
+
 // +marshal
 type UVM_ALLOC_SEMAPHORE_POOL_PARAMS struct {
 	Base               uint64
diff --git a/pkg/sentry/devices/nvproxy/seccomp_filters.go b/pkg/sentry/devices/nvproxy/seccomp_filters.go
index dedec73c9..e75cd8430 100644
--- a/pkg/sentry/devices/nvproxy/seccomp_filters.go
+++ b/pkg/sentry/devices/nvproxy/seccomp_filters.go
@@ -190,6 +190,10 @@ func Filters() seccomp.SyscallRules {
 				seccomp.NonNegativeFD{},
 				seccomp.EqualTo(nvgpu.UVM_MAP_DYNAMIC_PARALLELISM_REGION),
 			},
+			seccomp.PerArg{
+				seccomp.NonNegativeFD{},
+				seccomp.EqualTo(nvgpu.UVM_UNMAP_EXTERNAL),
+			},
 			seccomp.PerArg{
 				seccomp.NonNegativeFD{},
 				seccomp.EqualTo(nvgpu.UVM_ALLOC_SEMAPHORE_POOL),
diff --git a/pkg/sentry/devices/nvproxy/version.go b/pkg/sentry/devices/nvproxy/version.go
index d284f6d14..222264701 100644
--- a/pkg/sentry/devices/nvproxy/version.go
+++ b/pkg/sentry/devices/nvproxy/version.go
@@ -194,6 +194,7 @@ func Init() {
 					nvgpu.UVM_DISABLE_READ_DUPLICATION:       uvmIoctlSimple[nvgpu.UVM_DISABLE_READ_DUPLICATION_PARAMS],
 					nvgpu.UVM_MIGRATE_RANGE_GROUP:            uvmIoctlSimple[nvgpu.UVM_MIGRATE_RANGE_GROUP_PARAMS],
 					nvgpu.UVM_MAP_DYNAMIC_PARALLELISM_REGION: uvmIoctlSimple[nvgpu.UVM_MAP_DYNAMIC_PARALLELISM_REGION_PARAMS],
+					nvgpu.UVM_UNMAP_EXTERNAL:                 uvmIoctlSimple[nvgpu.UVM_UNMAP_EXTERNAL_PARAMS],
 					nvgpu.UVM_ALLOC_SEMAPHORE_POOL:           uvmIoctlSimple[nvgpu.UVM_ALLOC_SEMAPHORE_POOL_PARAMS],
 					nvgpu.UVM_VALIDATE_VA_RANGE:              uvmIoctlSimple[nvgpu.UVM_VALIDATE_VA_RANGE_PARAMS],
 					nvgpu.UVM_CREATE_EXTERNAL_RANGE:          uvmIoctlSimple[nvgpu.UVM_CREATE_EXTERNAL_RANGE_PARAMS],