diff --git a/config/versions.conf b/config/versions.conf
index 8b1ed63..c1d7ea4 100644
--- a/config/versions.conf
+++ b/config/versions.conf
@@ -1,10 +1,10 @@
-AUTOCONF_VERSION='2.69'
-AUTOMAKE_VERSION='1.14'
-CMAKE_VERSION='2.8.12.2'
+AUTOCONF_VERSION=2.69
+AUTOMAKE_VERSION=1.14
+CMAKE_VERSION=2.8.12.2
 EMACS_VERSION=24.3
-GCC_VERSION='4.7.3'
-GCC_VERSION='4.8.2'
-GMP_VERSION='5.1.1'
+GCC_VERSION=4.7.3
+GCC_VERSION=4.8.2
+GMP_VERSION=5.1.1
 GNUPLOT_VERSION=4.6.3
 GSL_VERSION=1.15
 H5HUT_SERIAL_VERSION=1.99.13
@@ -12,11 +12,12 @@ H5HUT_VERSION=1.99.13
 HDF5_SERIAL_VERSION=1.8.12
 HDF5_VERSION=1.8.12
 IPPL_VERSION=1.1.0
-LIBTOOL_VERSION='2.4.2'
-M4_VERSION='1.4.17'
+LIBTOOL_VERSION=2.4.2
+LUA_VERSION=5.1.4.5
+M4_VERSION=1.4.17
 MATHLIB_VERSION=1.0.0
-MPC_VERSION='1.0.1'
-MPFR_VERSION='3.1.2'
+MPC_VERSION=1.0.1
+MPFR_VERSION=3.1.2
 OPAL_VERSION=1.2.0
 PARMETIS_VERSION=3.2.0
 ROOT_VERSION=5.34.11