diff --git a/README.md b/README.md
index 02c1a69..86d5347 100644
--- a/README.md
+++ b/README.md
@@ -109,20 +109,33 @@ inline $a^*=x-b^*$ snippet
[![GoDoc](https://godoc.org/github.com/gohugoio/hugo-goldmark-extensions/extras?status.svg)](https://godoc.org/github.com/gohugoio/hugo-goldmark-extensions/extras)
-Use this extension to include [inserted text], [mark text], [subscript], and [superscript] elements in Markdown.
+Use this extension to include [deleted text], [inserted text], [mark text], [subscript], and [superscript] elements in Markdown.
Element|Markdown|Rendered
:--|:--|:--
+Deleted text|`~~foo~~`|`foo`
Inserted text|`++foo++`|`foo`
Mark text|`==bar==`|`bar`
Subscript|`H~2~O`|`H2O`
Superscript|`1^st^`|`1st`
+[deleted text]: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/del
[inserted text]: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/ins
[mark text]: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/mark
[subscript]: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/sub
[superscript]: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/sup
+### Deleted text
+
+With Goldmark v1.7.1 and earlier, the Goldmark "strikethrough" extension was triggered by wrapping text within a pair of double-tilde characters. With Goldmark v1.7.2 and later, to provide full GFM compatibility, the Goldmark "strikethrough" extension is triggered by wrapping text within a pair of single- or double-tilde characters.
+
+This change conflicts with the Hugo Goldmark Extras "subscript" extension.
+
+When enabling the Hugo Goldmark Extras "subscript" extension, if you want to render subscript and strikethrough text concurrently, you must:
+
+1. Disable the Goldmark "strikethrough" extension
+2. Enable the Hugo Goldmark Extras "delete" extension
+
### Usage
```go
@@ -140,6 +153,7 @@ func main() {
md := goldmark.New(
goldmark.WithExtensions(extras.New(
extras.Config{
+ Delete: extras.DeleteConfig{Enable: true},
Insert: extras.InsertConfig{Enable: true},
Mark: extras.MarkConfig{Enable: true},
Subscript: extras.SubscriptConfig{Enable: true},
@@ -153,9 +167,9 @@ Hydrogen (H) is the 1^st^ element in the periodic table.
Water (H~2~O) is a liquid.
-Water (H~2~O) is a ++transparent++ liquid.
+Water (H~2~O) is a ~~liquid~~ ++compound++.
-Water (H~2~O) is a ++transparent++ ==liquid==.
+Water (H~2~O) is an ==organic compound==.
`
var buf bytes.Buffer