diff --git a/ChangeLog b/ChangeLog
index e0249e4ba..2e9be10c5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-09-02  Colin Watson  <cjwatson@ubuntu.com>
+
+	* INSTALL: Document that libdevmapper needs to be 1.02.34 or later.
+
 2010-09-02  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* configure.ac: Check for dm_log_with_errno_init in libdevmapper and
diff --git a/INSTALL b/INSTALL
index bbfa01f0a..e325fa2b2 100644
--- a/INSTALL
+++ b/INSTALL
@@ -21,7 +21,7 @@ configuring the GRUB.
 
 On GNU/Linux, you also need:
 
-* libdevmapper (recommended)
+* libdevmapper 1.02.34 or later (recommended)
 
 To build grub-emu, you need: