diff --git a/package-lock.json b/package-lock.json
index 035f872de91..10db22d5458 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5103,9 +5103,9 @@
       }
     },
     "gl-surface3d": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/gl-surface3d/-/gl-surface3d-1.5.0.tgz",
-      "integrity": "sha512-0FZQKUlviZ+bJYg0MPxiIh800Li+Jn08oKze6ipEXo1rcFff7f0sqwU5tht9h3Y/uMU9lYEwYfvIFZgzXMo1Kg==",
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/gl-surface3d/-/gl-surface3d-1.5.1.tgz",
+      "integrity": "sha512-wE9tMHlAL5ZBluXpdVwxhBiPv7J9HwEBc5tVHFDP6TJkvhvf2RTDkCPDOPP5wCSLAFATImbzgwgoNM30/ghDTw==",
       "requires": {
         "binary-search-bounds": "^2.0.4",
         "bit-twiddle": "^1.0.2",
diff --git a/package.json b/package.json
index 03c4477e823..4793a480c8a 100644
--- a/package.json
+++ b/package.json
@@ -88,7 +88,7 @@
     "gl-select-box": "^1.0.3",
     "gl-spikes2d": "^1.0.2",
     "gl-streamtube3d": "^1.4.0",
-    "gl-surface3d": "^1.5.0",
+    "gl-surface3d": "^1.5.1",
     "gl-text": "^1.1.8",
     "glslify": "^7.0.0",
     "has-hover": "^1.0.1",
diff --git a/test/image/baselines/gl3d_surface_transparent-with-contours.png b/test/image/baselines/gl3d_surface_transparent-with-contours.png
new file mode 100644
index 00000000000..c8ac6434e5b
Binary files /dev/null and b/test/image/baselines/gl3d_surface_transparent-with-contours.png differ
diff --git a/test/image/mocks/gl3d_surface_transparent-with-contours.json b/test/image/mocks/gl3d_surface_transparent-with-contours.json
new file mode 100644
index 00000000000..fddc70c9d3f
--- /dev/null
+++ b/test/image/mocks/gl3d_surface_transparent-with-contours.json
@@ -0,0 +1,75 @@
+{
+    "data": [
+        {
+            "opacity": 0.5,
+            "type": "surface",
+            "colorscale": "Earth",
+            "contours": {
+                "z": {
+                    "show": true
+                }
+            },
+            "x": [
+                0,
+                0.25,
+                0.5,
+                0.75,
+                1
+            ],
+            "y": [
+                0,
+                0.25,
+                0.5,
+                0.75,
+                1
+            ],
+            "z": [
+                [
+                    0,
+                    0,
+                    0,
+                    0,
+                    0
+                ],
+                [
+                    0,
+                    0.1,
+                    0.8,
+                    0.7,
+                    0
+                ],
+                [
+                    0,
+                    0.2,
+                    0,
+                    0.6,
+                    0
+                ],
+                [
+                    0,
+                    0.3,
+                    0.4,
+                    0.5,
+                    0
+                ],
+                [
+                    0,
+                    0,
+                    0,
+                    0,
+                    0
+                ]
+            ]
+        }
+    ],
+    "layout": {
+        "width": 600,
+        "height": 400,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        }
+    }
+}