diff --git a/README b/README
index 2062b05..ce0b0ae 100644
--- a/README
+++ b/README
@@ -67,17 +67,17 @@ You will need to have libykclient (ykclient.h, libykclient.so) and
 libpam-dev (security/pam_appl.h, libpam.so) installed.  Get the
 ykclient library from:
 
-  http://code.google.com/p/yubico-c-client/
+  http://opensource.yubico.com/yubico-c-client/
 
 It in turn requires Curl, which you need to have installed, and
 libyubikey. Get libyubikey from
 
-  http://code.google.com/p/yubico-c/
+  http://opensource.yubico.com/yubico-c/
 
 The new Challenge-Response offline authentication requires libykpers-1
 from the yubikey-personalization project :
 
-  http://code.google.com/p/yubikey-personalization/
+  http://opensource.yubico.com/yubikey-personalization/
 
 
 The build system uses Autoconf, to set up the build system run:
diff --git a/configure.ac b/configure.ac
index 063a366..d488993 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,7 +68,7 @@ AC_ARG_WITH([ldap],
 AC_LIB_HAVE_LINKFLAGS([ykclient],, [#include <ykclient.h>],
                       [ykclient_set_ca_path(0, 0)])
 if test "$ac_cv_libykclient" != yes; then
-   AC_MSG_ERROR([[Libykclient v2.4+ required, see http://code.google.com/p/yubico-c-client/]])
+   AC_MSG_ERROR([[Libykclient v2.4+ required, see http://opensource.yubico.com/yubico-c-client/]])
 fi
 
 AC_LIB_HAVE_LINKFLAGS(yubikey,, [#include <yubikey.h>],
@@ -83,7 +83,7 @@ if test "x$with_cr" != xno; then
   PKG_CHECK_MODULES([YKPERS], [ykpers-1]);
   # libyubikey required for HAVE_CR
   if test "$ac_cv_libyubikey" != yes; then
-    AC_MSG_ERROR([Libyubikey v1.5+ not found, see http://code.google.com/p/yubico-c/ (required for challenge-response)])
+    AC_MSG_ERROR([Libyubikey v1.5+ not found, see http://opensource.yubico.com/yubico-c/ (required for challenge-response)])
   fi
 fi
 if test -n "$YKPERS_LIBS"; then