diff --git a/common/environment/configure/autoconf_cache/common-linux b/common/environment/configure/autoconf_cache/common-linux
index ce8c10fad9..6de29c6ab5 100644
--- a/common/environment/configure/autoconf_cache/common-linux
+++ b/common/environment/configure/autoconf_cache/common-linux
@@ -27,6 +27,10 @@ ac_cv_func_pwrite=yes
 ac_cv_file__dev_random=yes
 ac_cv_file__dev_urandom=yes
 
+# ruby
+ac_cv_func_isnan=yes
+ac_cv_func_isinf=yes
+
 # apr
 ac_cv_file__dev_zero=${ac_cv_file__dev_zero=yes}
 ac_cv_sizeof_pid_t=${ac_cv_sizeof_pid_t=4}
diff --git a/srcpkgs/ruby/template b/srcpkgs/ruby/template
index bbeb68451d..f06635bcfe 100644
--- a/srcpkgs/ruby/template
+++ b/srcpkgs/ruby/template
@@ -3,7 +3,7 @@ _ruby_abiver=2.2.0
 
 pkgname=ruby
 version=2.2.2
-revision=2
+revision=3
 build_style=gnu-configure
 configure_args="--enable-shared --disable-rpath
  DOXYGEN=/usr/bin/doxygen DOT=/usr/bin/dot PKG_CONFIG=/usr/bin/pkg-config"