diff --git a/.document b/.document
index 8a418e5d4a..7410eaaed5 100644
--- a/.document
+++ b/.document
@@ -25,7 +25,7 @@ lib
 ext
 
 # rdoc files
-NEWS
+NEWS.md
 
 README.md
 README.ja.md
diff --git a/NEWS b/NEWS
deleted file mode 100644
index 8b43c6b7ff..0000000000
--- a/NEWS
+++ /dev/null
@@ -1,37 +0,0 @@
-# -*- rdoc -*-
-
-= NEWS for Ruby 2.8.0 (tentative; to be 3.0.0)
-
-This document is a list of user visible feature changes made between
-releases except for bug fixes.
-
-Note that each entry is kept so brief that no reason behind or reference
-information is supplied with.  For a full list of changes with all
-sufficient information, see the ChangeLog file or Redmine
-(e.g. <tt>https://bugs.ruby-lang.org/issues/$FEATURE_OR_BUG_NUMBER</tt>).
-
-== Changes since the 2.7.0 release
-
-=== Language changes
-
-=== Command line options
-
-=== Core classes updates (outstanding ones only)
-
-Hash::
-
-  Modified method::
-
-    * Hash#transform_keys now accepts a hash that maps keys to new keys.  [Feature #16274]
-
-=== Stdlib updates (outstanding ones only)
-
-=== Compatibility issues (excluding feature bug fixes)
-
-=== Stdlib compatibility issues (excluding feature bug fixes)
-
-=== C API updates
-
-=== Implementation improvements
-
-=== Miscellaneous changes
diff --git a/NEWS.md b/NEWS.md
new file mode 100644
index 0000000000..0bc98be894
--- /dev/null
+++ b/NEWS.md
@@ -0,0 +1,35 @@
+# NEWS for Ruby 2.8.0 (tentative; to be 3.0.0)
+
+This document is a list of user visible feature changes made between
+releases except for bug fixes.
+
+Note that each entry is kept so brief that no reason behind or reference
+information is supplied with.  For a full list of changes with all
+sufficient information, see the ChangeLog file or Redmine
+(e.g. `https://bugs.ruby-lang.org/issues/$FEATURE_OR_BUG_NUMBER`).
+
+## Changes since the 2.7.0 release
+
+### Language changes
+
+### Command line options
+
+### Core classes updates (outstanding ones only)
+
+Hash::
+
+  Modified method::
+
+    * Hash#transform_keys now accepts a hash that maps keys to new keys.  [Feature #16274]
+
+### Stdlib updates (outstanding ones only)
+
+### Compatibility issues (excluding feature bug fixes)
+
+### Stdlib compatibility issues (excluding feature bug fixes)
+
+### C API updates
+
+### Implementation improvements
+
+### Miscellaneous changes