diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog for the [`clash-ghc`](http://hackage.haskell.org/package/clash-ghc) package
 
+## 0.5.9 *June 26th 2015*
+* New features:
+  * Use new verilog backend which outputs Verilog-2001 instead of Verilog-2005: generated Verilog is now accepted by Altera/Quartus
+
+* Fixes bugs:
+  * `--systemverilog` switch incorrectly generates verilog code instead of systemverilog code
+
 ## 0.5.8 *June 25th 2015*
 * New features:
   * Support for copying string literals from Haskell to generated code
diff --git a/clash-ghc.cabal b/clash-ghc.cabal
--- a/clash-ghc.cabal
+++ b/clash-ghc.cabal
@@ -1,5 +1,5 @@
 Name:                 clash-ghc
-Version:              0.5.8
+Version:              0.5.9
 Synopsis:             CAES Language for Synchronous Hardware
 Description:
   CλaSH (pronounced ‘clash’) is a functional hardware description language that
@@ -70,10 +70,10 @@
                       unbound-generics          >= 0.1,
                       unordered-containers      >= 0.2.1.0,
 
-                      clash-lib                 >= 0.5.7,
-                      clash-systemverilog       >= 0.5.6,
-                      clash-vhdl                >= 0.5.7,
-                      clash-verilog             >= 0.5.6,
+                      clash-lib                 >= 0.5.8,
+                      clash-systemverilog       >= 0.5.7,
+                      clash-vhdl                >= 0.5.7.1,
+                      clash-verilog             >= 0.5.7,
                       clash-prelude             >= 0.9,
                       ghc-typelits-natnormalise >= 0.3
 
diff --git a/src-bin/Main.hs b/src-bin/Main.hs
--- a/src-bin/Main.hs
+++ b/src-bin/Main.hs
@@ -520,7 +520,7 @@
 showPackagesMode = mkPostLoadMode ShowPackages
 doVHDLMode = mkPostLoadMode DoVHDL
 doVerilogMode = mkPostLoadMode DoVerilog
-doSystemVerilogMode = mkPostLoadMode DoVerilog
+doSystemVerilogMode = mkPostLoadMode DoSystemVerilog
 
 showInterfaceMode :: FilePath -> Mode
 showInterfaceMode fp = mkPostLoadMode (ShowInterface fp)