diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5da5f947380..cd575dbcb4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,5 @@
 
+ * Virtualize `nvinfer1::IGpuAllocator` from TensorRT to allow customization ([pull #1367](https://github.com/bytedeco/javacpp-presets/pull/1367))
  * Add new `SampleJpegEncoder` code for nvJPEG module of CUDA ([pull #1365](https://github.com/bytedeco/javacpp-presets/pull/1365))
  * Map `std::vector` of `CameraParams`, `ImageFeatures`, and `MatchesInfo` from `cv::detail` ([issue bytedeco/javacv#2027](https://github.com/bytedeco/javacv/issues/2027))
  * Fix H.264 decoder of FFmpeg by increasing MAX_SLICES to 256 ([pull #1349](https://github.com/bytedeco/javacpp-presets/pull/1349))
diff --git a/tensorrt/src/gen/java/org/bytedeco/tensorrt/nvinfer/IGpuAllocator.java b/tensorrt/src/gen/java/org/bytedeco/tensorrt/nvinfer/IGpuAllocator.java
index 31344ada410..377f271785a 100644
--- a/tensorrt/src/gen/java/org/bytedeco/tensorrt/nvinfer/IGpuAllocator.java
+++ b/tensorrt/src/gen/java/org/bytedeco/tensorrt/nvinfer/IGpuAllocator.java
@@ -29,6 +29,15 @@ public class IGpuAllocator extends Pointer {
     static { Loader.load(); }
     /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
     public IGpuAllocator(Pointer p) { super(p); }
+    /** Native array allocator. Access with {@link Pointer#position(long)}. */
+    public IGpuAllocator(long size) { super((Pointer)null); allocateArray(size); }
+    private native void allocateArray(long size);
+    @Override public IGpuAllocator position(long position) {
+        return (IGpuAllocator)super.position(position);
+    }
+    @Override public IGpuAllocator getPointer(long i) {
+        return new IGpuAllocator((Pointer)this).offsetAddress(i);
+    }
 
     /**
      *  A thread-safe callback implemented by the application to handle acquisition of GPU memory.
@@ -61,7 +70,7 @@ public class IGpuAllocator extends Pointer {
     //!
     //!
     //!
-    public native @Name("allocate") @NoException(true) Pointer _allocate(@Cast("const uint64_t") long size, @Cast("const uint64_t") long alignment, @Cast("const nvinfer1::AllocatorFlags") int flags);
+    @Virtual(true) public native @Name("allocate") @NoException(true) Pointer _allocate(@Cast("const uint64_t") long size, @Cast("const uint64_t") long alignment, @Cast("const nvinfer1::AllocatorFlags") int flags);
 
     /**
      *  A thread-safe callback implemented by the application to handle release of GPU memory.
@@ -85,12 +94,26 @@ public class IGpuAllocator extends Pointer {
     
     //!
     //!
-    public native @Deprecated @Name("free") @NoException(true) void _free(Pointer memory);
+    @Virtual(true) public native @Deprecated @Name("free") @NoException(true) void _free(Pointer memory);
 
     /**
      *  Destructor declared virtual as general good practice for a class with virtual methods.
      *  TensorRT never calls the destructor for an IGpuAllocator defined by the application.
      *  */
+    
+    
+    //!
+    //!
+    //!
+    //!
+    //!
+    //!
+    //!
+    //!
+    //!
+    //!
+    public IGpuAllocator() { super((Pointer)null); allocate(); }
+    private native void allocate();
 
     /**
      *  A thread-safe callback implemented by the application to resize an existing allocation.
@@ -135,7 +158,7 @@ public class IGpuAllocator extends Pointer {
     //!
     //!
     //!
-    public native @NoException(true) Pointer reallocate(Pointer arg0, @Cast("uint64_t") long arg1, @Cast("uint64_t") long arg2);
+    @Virtual public native @NoException(true) Pointer reallocate(Pointer arg0, @Cast("uint64_t") long arg1, @Cast("uint64_t") long arg2);
 
     /**
      *  A thread-safe callback implemented by the application to handle release of GPU memory.
@@ -157,5 +180,5 @@ public class IGpuAllocator extends Pointer {
      *  - Allowed context for the API call
      *    - Thread-safe: Yes, this method is required to be thread-safe and may be called from multiple threads.
      *  */
-    public native @Cast("bool") @Name("deallocate") @NoException(true) boolean _deallocate(Pointer memory);
+    @Virtual public native @Cast("bool") @Name("deallocate") @NoException(true) boolean _deallocate(Pointer memory);
 }
diff --git a/tensorrt/src/main/java/org/bytedeco/tensorrt/presets/nvinfer.java b/tensorrt/src/main/java/org/bytedeco/tensorrt/presets/nvinfer.java
index 797f209d432..037c418d2b8 100644
--- a/tensorrt/src/main/java/org/bytedeco/tensorrt/presets/nvinfer.java
+++ b/tensorrt/src/main/java/org/bytedeco/tensorrt/presets/nvinfer.java
@@ -142,7 +142,7 @@ public void map(InfoMap infoMap) {
                              "nvinfer1::IAlgorithmIOInfo", "nvinfer1::IAlgorithmVariant", "nvinfer1::IAlgorithmContext", "nvinfer1::IAlgorithm", "nvinfer1::ICastLayer",
                              "nvinfer1::IGridSampleLayer", "nvinfer1::INMSLayer", "nvinfer1::INonZeroLayer", "nvinfer1::INormalizationLayer", "nvinfer1::IReverseSequenceLayer").purify())
                .put(new Info("nvinfer1::IGpuAllocator::free").javaNames("_free"))
-               .put(new Info("nvinfer1::IProfiler", "nvinfer1::ILogger", "nvinfer1::IInt8Calibrator", "nvinfer1::IInt8EntropyCalibrator",
+               .put(new Info("nvinfer1::IGpuAllocator", "nvinfer1::IProfiler", "nvinfer1::ILogger", "nvinfer1::IInt8Calibrator", "nvinfer1::IInt8EntropyCalibrator",
                              "nvinfer1::IInt8EntropyCalibrator2", "nvinfer1::IInt8MinMaxCalibrator", "nvinfer1::IInt8LegacyCalibrator").virtualize())
                .put(new Info("nvinfer1::IPluginRegistry::getPluginCreatorList").javaText(
                              "public native @Cast(\"nvinfer1::IPluginCreator*const*\") PointerPointer getPluginCreatorList(IntPointer numCreators);"))