diff --git a/README b/README
index eafb15d..bf4fbd0 100644
--- a/README
+++ b/README
@@ -22,10 +22,11 @@ Requirements:
     3. bash
 
 Optional Dependencies:
-    * aespipe  [for aes-encrypted buffers]
-    * ispell   [for spell-checking]
-    * cvs      [for cvs-based commands]
-    * svn      [for svn-based commands]
+    * aespipe   [for aes-encrypted buffers]
+    * ispell    [for spell-checking]
+    * cvs       [for cvs-based commands]
+    * svn       [for svn-based commands]
+    * mercurial [for hg-based commands]
 
     * perl     [for perl syntax-checking]
     * gcc      [for c compilation/syntax-checking]