diff --git a/CHANGES.md b/CHANGES.md
index 8d782aa2..7ff56c86 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -450,8 +450,8 @@ below.
 
 * Colorized and bolded output is disabled when stdout is not attached to a
   terminal (e.g. is redirected to a file, piped to another program, etc.) or
-  when the [`NO_COLOR` environment variable](https://no-color.org) is set to a
-  non-empty value.
+  when the [`NO_COLOR` environment variable](https://github.com/jcs/no_color/blob/@/index.md)
+  is set to a non-empty value.
   ([#419][])
 
 * The readability of `--help` output is improved by the addition of blank lines
diff --git a/doc/changes.md b/doc/changes.md
index 75c87215..6d1f2a31 100644
--- a/doc/changes.md
+++ b/doc/changes.md
@@ -484,8 +484,8 @@ below.
 
 * Colorized and bolded output is disabled when stdout is not attached to a
   terminal (e.g. is redirected to a file, piped to another program, etc.) or
-  when the [`NO_COLOR` environment variable](https://no-color.org) is set to a
-  non-empty value.
+  when the [`NO_COLOR` environment variable](https://github.com/jcs/no_color/blob/@/index.md)
+  is set to a non-empty value.
   ([#419][])
 
 * The readability of `--help` output is improved by the addition of blank lines