diff --git a/bootstrap.conf b/bootstrap.conf
index e037915..771cf29 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -71,9 +71,9 @@ fi
 
 # Build prerequisites
 buildreq="\
-autoconf   2.68
+autoconf   2.65
 automake   1.11.1
 git        1.5.5
-libtool    2.4
+libtool    2.2.2
 tar        -
 "
diff --git a/configure.ac b/configure.ac
index e0c6d95..f6c2bb7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,7 +29,7 @@ gl_INIT
 AC_TYPE_UINT64_T
 
 AT_WITH_QT
-AT_REQUIRE_QT_VERSION([4.7])
+AT_REQUIRE_QT_VERSION([4.6])
 
 if test x"$with_qt" != x"no"; then
   AC_MSG_CHECKING([for QLocale::quoteString])