diff --git a/xlockmore.changes b/xlockmore.changes
index 85b8e7b..0e7021e 100644
--- a/xlockmore.changes
+++ b/xlockmore.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Mon Dec 16 12:00:12 EET 2013 - cougar@random.ee
+
+- Added "pam-modules" dependency: xlockmore uses /sbin/unix2_chkpwd
+  for password check. Without this binary it is not possible
+  to unlock your X Window System session.
+
 -------------------------------------------------------------------
 Sun Dec 15 18:57:59 UTC 2013 - hrvoje.senjan@gmail.com
 
diff --git a/xlockmore.spec b/xlockmore.spec
index 3ead53d..6cf114b 100644
--- a/xlockmore.spec
+++ b/xlockmore.spec
@@ -53,6 +53,7 @@ BuildRequires:  libXdmcp-devel
 BuildRequires:  libXt-devel
 BuildRequires:  libdrm-devel
 BuildRequires:  pkg-config
+Requires:       pam-modules
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description