diff --git a/scripts/makedeb.sh b/scripts/makedeb.sh
index a6902f0f9..bdd9a4140 100755
--- a/scripts/makedeb.sh
+++ b/scripts/makedeb.sh
@@ -19,7 +19,7 @@ fi
 # TODO: derive this list automatically?
 case $target in
 ubuntu16)
-  depends="libqt4-designer (>= 4.8.6), libqt4-xml (>= 4.8.6), libqt4-sql (>= 4.8.6), libqt4-network (>= 4.8.6), libqtcore4 (>= 4.8.6), libqtgui4 (>= 4.8.6), zlib1g (>= 1.2.8), libruby2.3 (>= 2.3.1), libpython3 (>= 3.5.1)"
+  depends="libqt4-designer (>= 4.8.6), libqt4-xml (>= 4.8.6), libqt4-sql (>= 4.8.6), libqt4-network (>= 4.8.6), libqtcore4 (>= 4.8.6), libqtgui4 (>= 4.8.6), zlib1g (>= 1.2.8), libruby2.3 (>= 2.3.1), libpython3 (>= 3.5.1), libstdc++6 (>= 4.6.3), libc6 (>= 2.15)"
   ;;
 *)
   echo "Unknown target '$target' (given as first argument)"
diff --git a/scripts/rpm-data/klayout.spec b/scripts/rpm-data/klayout.spec
index e530fad1d..5ab3c82b6 100644
--- a/scripts/rpm-data/klayout.spec
+++ b/scripts/rpm-data/klayout.spec
@@ -45,14 +45,14 @@ Requires: qt-x11 >= 4.8.5
 
 %if "%{target_system}" == "opensuse42_2"
 # OpenSuSE 42.2 requirements
-Requires:	ruby >= 2.1.0
+Requires:	ruby2.3 >= 2.3.1
 Requires:	python >= 3.4.6
 Requires: libqt4 >= 4.8.6
 %endif
 
 %if "%{target_system}" == "opensuse42_3"
 # OpenSuSE 42.3 requirements
-Requires:	ruby >= 2.1.0
+Requires:	ruby2.3 >= 2.3.1
 Requires:	python >= 3.4.6
 Requires: libqt4 >= 4.8.6
 # ...
@@ -95,7 +95,13 @@ elif which python; then
 fi
 
 RUBY=ruby
-if which ruby2; then
+if which ruby2.3; then
+  RUBY=ruby2.3
+elif which ruby2.2; then
+  RUBY=ruby2.2
+elif which ruby2.1; then
+  RUBY=ruby2.1
+elif which ruby2; then
   RUBY=ruby2
 elif which ruby; then
   RUBY=ruby