diff --git a/README.md b/README.md
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--- a/README.md
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@@ -7,7 +7,7 @@
 
 # sed
 
-Rust reimplementation of the [sed utility](https://pubs.opengroup.org/onlinepubs/9799919799/).
+Rust reimplementation of the [sed utility](https://pubs.opengroup.org/onlinepubs/9799919799/utilities/sed.html).
 
 ## Installation