diff --git a/backend/x/gorgonnx/gap.go b/backend/x/gorgonnx/gap.go
index d1400e65..80d9677d 100644
--- a/backend/x/gorgonnx/gap.go
+++ b/backend/x/gorgonnx/gap.go
@@ -2,14 +2,9 @@ package gorgonnx
 
 import (
 	"errors"
-	"fmt"
-	"hash"
-	"hash/fnv"
 
-	"github.com/chewxy/hm"
 	"github.com/owulveryck/onnx-go"
 	"gorgonia.org/gorgonia"
-	"gorgonia.org/tensor"
 )
 
 func init() {
@@ -32,150 +27,10 @@ func (g *gap) apply(gg *Graph, ns ...*Node) error {
 
 	// Temporary, waiting for the operator to be implemented in Gorgonia
 	// see https://github.com/gorgonia/gorgonia/pull/302
-	/*
-		n.gorgoniaNode, err = gorgonia.GlobalAveragePool2D(children[0].gorgoniaNode)
-	*/
-	n.gorgoniaNode, err = gorgonia.ApplyOp(g, children[0].gorgoniaNode)
+	n.gorgoniaNode, err = gorgonia.GlobalAveragePool2D(children[0].gorgoniaNode)
 	return err
 }
 
 func (*gap) init(onnx.Operation) error {
 	return nil
 }
-
-func (g *gap) Arity() int {
-	return 1
-}
-
-func (g *gap) Type() hm.Type {
-	t := gorgonia.TensorType{Dims: 4, Of: hm.TypeVariable('a')}
-	return hm.NewFnType(t, t)
-}
-
-func (g *gap) InferShape(inputs ...gorgonia.DimSizer) (tensor.Shape, error) {
-	b, err := inputs[0].DimSize(0)
-	if err != nil {
-		return nil, err
-	}
-	c, err := inputs[0].DimSize(1)
-	if err != nil {
-		return nil, err
-	}
-	// check if the shape is correct without doing type inference
-	if _, err := inputs[0].DimSize(2); err != nil {
-		return nil, err
-	}
-	if _, err := inputs[0].DimSize(3); err != nil {
-		return nil, err
-	}
-	return tensor.Shape{b, c, 1, 1}, nil
-}
-
-func (g *gap) Do(inputs ...gorgonia.Value) (gorgonia.Value, error) {
-	im := inputs[0]
-	switch im.(type) {
-	case tensor.Tensor:
-		v := im.(tensor.Tensor)
-		B, C, H, W := v.Shape()[0], v.Shape()[1], v.Shape()[2], v.Shape()[3]
-		s, err := g.InferShape(v.Shape())
-		if err != nil {
-			return nil, err
-		}
-		output := tensor.New(tensor.Of(v.Dtype()), tensor.WithShape(s...))
-		switch v.Dtype() {
-		case tensor.Float64:
-			err = setFloat64AtTensor(v, B, C, H, W, output)
-			if err != nil {
-				return nil, err
-			}
-		case tensor.Float32:
-			err = setFloat32AtTensor(v, B, C, H, W, output)
-			if err != nil {
-				return nil, err
-			}
-		default:
-			return nil, &onnx.ErrNotImplemented{
-				Operator: "Global Average Pool",
-				Message:  fmt.Sprintf("%v not implemented", v.Dtype()),
-			}
-		}
-
-		return output, nil
-
-	default:
-		return nil, &onnx.ErrNotImplemented{
-			Operator: "Global Average Pool",
-			Message:  fmt.Sprintf("invalid input %v", inputs),
-		}
-	}
-}
-
-func setFloat64AtTensor(v tensor.Tensor, B, C, H, W int, output tensor.Tensor) error {
-	for b := 0; b < B; b++ {
-		for c := 0; c < C; c++ {
-			var sum float64
-			for h := 0; h < H; h++ {
-				for w := 0; w < W; w++ {
-					val, err := v.At(b, c, h, w)
-					if err != nil {
-						return err
-					}
-					sum += val.(float64)
-				}
-			}
-			err := output.SetAt(sum/float64(H*W), b, c, 0, 0)
-			if err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func setFloat32AtTensor(v tensor.Tensor, B, C, H, W int, output tensor.Tensor) error {
-	for b := 0; b < B; b++ {
-		for c := 0; c < C; c++ {
-			var sum float32
-			for h := 0; h < H; h++ {
-				for w := 0; w < W; w++ {
-					val, err := v.At(b, c, h, w)
-					if err != nil {
-						return err
-					}
-					sum += val.(float32)
-				}
-			}
-			err := output.SetAt(sum/float32(H*W), b, c, 0, 0)
-			if err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func (g *gap) ReturnsPtr() bool {
-	return false
-}
-
-func (g *gap) CallsExtern() bool {
-	return false
-}
-
-func (g *gap) OverwritesInput() int {
-	return -1
-}
-
-func (g *gap) WriteHash(h hash.Hash) {
-	fmt.Fprintf(h, "GlobalAveragePool")
-}
-
-func (g *gap) Hashcode() uint32 {
-	h := fnv.New32a()
-	g.WriteHash(h)
-	return h.Sum32()
-}
-
-func (g *gap) String() string {
-	return "GlobalAveragePool"
-}
diff --git a/go.mod b/go.mod
index ea23f44f..a63cf966 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,6 @@ go 1.12
 require (
 	github.com/awalterschulze/gographviz v0.0.0-20190522210029-fa59802746ab // indirect
 	github.com/chewxy/hm v1.0.0
-	github.com/chewxy/math32 v1.0.4 // indirect
 	github.com/davecgh/go-spew v1.1.0
 	github.com/disintegration/imaging v1.6.0
 	github.com/gogo/protobuf v1.2.1
@@ -22,6 +21,6 @@ require (
 	golang.org/x/net v0.0.0-20190611141213-3f473d35a33a // indirect
 	golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b
 	gonum.org/v1/gonum v0.0.0-20190606121551-14af50e936aa
-	gorgonia.org/gorgonia v0.9.4-0.20191013102522-a6f8db2f4696 //indirect
+	gorgonia.org/gorgonia v0.9.4 //indirect
 	gorgonia.org/tensor v0.9.0-beta
 )
diff --git a/go.sum b/go.sum
index d5e7a997..b015e055 100644
--- a/go.sum
+++ b/go.sum
@@ -79,10 +79,10 @@ gorgonia.org/cu v0.9.0-beta h1:s4WQ6fiAGoErwIiXWHRB6Y9ydkx1vTTPwhWzoEZVePc=
 gorgonia.org/cu v0.9.0-beta/go.mod h1:RPEPIfaxxqUmeRe7T1T8a0NER+KxBI2McoLEXhP1Vd8=
 gorgonia.org/dawson v1.1.0 h1:o7+eJ3SKi9sheH19lpOat//tDbg0Y+M9iY/lH79VHqY=
 gorgonia.org/dawson v1.1.0/go.mod h1:Px1mcziba8YUBIDsbzGwbKJ11uIblv/zkln4jNrZ9Ws=
-gorgonia.org/gorgonia v0.9.3 h1:IO3/7piSdJwbmmEXHJLArvWH+TjVfzEAVhd+pW8gLRk=
-gorgonia.org/gorgonia v0.9.3/go.mod h1:ZtOb9f/wM2OMta1ISGspQ4roGDgz9d9dKOaPNvGR+ec=
 gorgonia.org/gorgonia v0.9.4-0.20191013102522-a6f8db2f4696 h1:YZ6HgxoWjk0cslQKbLZHkgQxYRswn4IlMs2bvQLuDvI=
 gorgonia.org/gorgonia v0.9.4-0.20191013102522-a6f8db2f4696/go.mod h1:ZtOb9f/wM2OMta1ISGspQ4roGDgz9d9dKOaPNvGR+ec=
+gorgonia.org/gorgonia v0.9.4 h1:msE583U+EuthijznpLPJ1Uk6LbNqZCWX/5mgq/L/EGg=
+gorgonia.org/gorgonia v0.9.4/go.mod h1:4kWgOIjKmCaY1H4JbMfhF6JXXNcbLpbCZ7m9EjVyZOY=
 gorgonia.org/tensor v0.9.0-beta h1:16QQufB1vbJxVbIOaB5TwkerdlBWtw+AAnZHUZ531ZE=
 gorgonia.org/tensor v0.9.0-beta/go.mod h1:05Y4laKuVlj4qFoZIZW1q/9n1jZkgDBOLmKXZdBLG1w=
 gorgonia.org/vecf32 v0.7.0 h1:mkpVzSyT7/Cput5/ZxaMzzp2xbmOtqOyJlTf7AdSMe0=