diff --git a/tests/wpt/webgl/meta/conformance/textures/misc/copy-tex-image-2d-formats.html.ini b/tests/wpt/webgl/meta/conformance/textures/misc/copy-tex-image-2d-formats.html.ini
index 503a5efca8e..a4bd32b2816 100644
--- a/tests/wpt/webgl/meta/conformance/textures/misc/copy-tex-image-2d-formats.html.ini
+++ b/tests/wpt/webgl/meta/conformance/textures/misc/copy-tex-image-2d-formats.html.ini
@@ -1,4 +1,5 @@
 [copy-tex-image-2d-formats.html]
+  bug: https://github.com/servo/servo/issues/20595
   [WebGL test #32: getError expected: INVALID_OPERATION. Was NO_ERROR : should not be able to copyTexImage2D ALPHA from RGB]
     expected: FAIL
 
diff --git a/tests/wpt/webgl/meta/conformance/textures/misc/tex-input-validation.html.ini b/tests/wpt/webgl/meta/conformance/textures/misc/tex-input-validation.html.ini
index a86dfea0c35..a5e193befaf 100644
--- a/tests/wpt/webgl/meta/conformance/textures/misc/tex-input-validation.html.ini
+++ b/tests/wpt/webgl/meta/conformance/textures/misc/tex-input-validation.html.ini
@@ -1,4 +1,5 @@
 [tex-input-validation.html]
+  bug: https://github.com/servo/servo/issues/20595
   [WebGL test #45: getError expected: INVALID_OPERATION. Was NO_ERROR :  colorBufferFormat: RGB565 internalFormat: RGBA target: TEXTURE_2D]
     expected: FAIL