diff --git a/README b/README
index b59dd9f6dd..dde402964b 100644
--- a/README
+++ b/README
@@ -20,7 +20,7 @@ Guix is based on the [[http://nixos.org/nix/][Nix]] package manager.
 
 GNU Guix currently depends on the following packages:
 
-  - [[http://gnu.org/software/guile/][GNU Guile 2.0.x]]
+  - [[http://gnu.org/software/guile/][GNU Guile 2.0.x]], version 2.0.5 or later
   - [[http://gnupg.org/][GNU libgcrypt]]
 
 Unless `--disable-daemon' was passed, the following packages are needed:
diff --git a/doc/guix.texi b/doc/guix.texi
index 009ea4beb3..ab31ffd575 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -162,7 +162,7 @@ is not covered here.  Please see the files @file{README} and
 GNU Guix depends on the following packages:
 
 @itemize
-@item @url{http://gnu.org/software/guile/, GNU Guile 2.0.x};
+@item @url{http://gnu.org/software/guile/, GNU Guile}, version 2.0.5 or later;
 @item @url{http://gnupg.org/, GNU libgcrypt}
 @end itemize