diff --git a/haskell-platform-build-tools-cabal-install.patch b/haskell-platform-build-tools-cabal-install.patch
new file mode 100644
index 0000000..0b61caa
--- /dev/null
+++ b/haskell-platform-build-tools-cabal-install.patch
@@ -0,0 +1,11 @@
+--- haskell-platform-7.10.2-a/haskell-platform.cabal~	2015-08-06 00:06:13.000000000 +0900
++++ haskell-platform-7.10.2-a/haskell-platform.cabal	2015-10-02 18:40:24.046614029 +0900
+@@ -110,7 +110,7 @@
+   -- Depending on programs does not work, they are not registered
+   -- We list them to help distro packaging.
+   build-tools:
+-      cabal-install                  ==1.22.6.0,
++--      cabal-install                  ==1.22.6.0,
+       alex                           ==3.1.4,
+       happy                          ==1.19.5,
+       hscolour                       ==1.23,
diff --git a/haskell-platform-build-tools.patch b/haskell-platform-build-tools.patch
deleted file mode 100644
index b693433..0000000
--- a/haskell-platform-build-tools.patch
+++ /dev/null
@@ -1,13 +0,0 @@
---- haskell-platform-7.10.2-a/packages/haskell-platform-7.10.2/haskell-platform.cabal~	2015-08-06 00:06:13.000000000 +0900
-+++ haskell-platform-7.10.2-a/packages/haskell-platform-7.10.2/haskell-platform.cabal	2015-10-02 18:40:24.046614029 +0900
-@@ -110,8 +110,8 @@
-   -- Depending on programs does not work, they are not registered
-   -- We list them to help distro packaging.
-   build-tools:
--      cabal-install                  ==1.22.6.0,
-+--      cabal-install                  ==1.22.6.0,
-       alex                           ==3.1.4,
-       happy                          ==1.19.5,
--      hscolour                       ==1.23,
-+      hscolour                       ==1.20,
-       haddock                        ==2.16.1
diff --git a/haskell-platform.spec b/haskell-platform.spec
index 3026209..3de9503 100644
--- a/haskell-platform.spec
+++ b/haskell-platform.spec
@@ -56,7 +56,7 @@ Group:          Development/Tools
 License:        BSD
 URL:            http://www.haskell.org/platform/
 Source0:        http://www.haskell.org/platform/download/%{version}/%{name}-%{upstream_version}-a.tar.gz
-Patch1:         haskell-platform-build-tools.patch
+Patch1:         haskell-platform-build-tools-cabal-install.patch
 
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-rpm-macros-extra
@@ -190,19 +190,16 @@ This provides the haskell-platform meta library package.
 
 %prep
 %setup -q -n %{name}-%{upstream_version}-a
+%patch1 -p1 -b .orig
 
 # hack for h-p.cabal in top dir
 mkdir packages/%{name}-%{version}
 cp LICENSE hptool/Setup.hs packages/%{name}-%{version}
 
 
-#cabal-tweak-dep-ver alex '==3.1.3' '==3.1.4'
-#cabal-tweak-dep-ver cabal-install '==1.18.0.5' '==%{cabal_install_version}'
-#cabal-tweak-dep-ver happy '==1.19.4' '==1.19.5'
 # HsColour reports 1.20
-#cabal-tweak-dep-ver hscolour '==1.20.3' '==1.20'
+cabal-tweak-dep-ver hscolour '==1.23' '==1.20'
 mv %{name}.cabal packages/%{name}-%{version}
-%patch1 -p1 -b .orig
 
 
 %build