diff --git a/ghc-happstack-server.spec b/ghc-happstack-server.spec
index 34b63ab..258f215 100644
--- a/ghc-happstack-server.spec
+++ b/ghc-happstack-server.spec
@@ -18,8 +18,7 @@ License:        BSD
 URL:            http://hackage.haskell.org/package/%{pkg_name}
 Source0:        http://hackage.haskell.org/packages/archive/%{pkg_name}/%{version}/%{pkg_name}-%{version}.tar.gz
 Patch1:         happstack-server-default-to-base4.patch
-Patch2:         happstack-server-7.0.0-mtl-transformers.patch
-Patch3:         happstack-server-7.0.0-blaze-html-base64.patch
+Patch2:         happstack-server-7.0.0-blaze-html.patch
 
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-rpm-macros
@@ -61,8 +60,11 @@ ExclusiveArch:  %{ghc_arches_with_ghci}
 %prep
 %setup -q -n %{pkg_name}-%{version}
 %patch1 -p1 -b .1-orig~
-%patch2 -p1 -b .2-mtl~
-%patch3 -p1 -b .3-blaze-base64~
+%patch2 -p1 -b .2-blaze~
+
+cabal-tweak-dep-ver mtl "< 2.1" "< 2.2"
+cabal-tweak-dep-ver transformers "< 0.3" "< 0.4"
+cabal-tweak-dep-ver base64-bytestring "== 0.1.*" "== 1.*"
 
 
 %build
diff --git a/happstack-server-7.0.0-blaze-html-base64.patch b/happstack-server-7.0.0-blaze-html-base64.patch
deleted file mode 100644
index a463a58..0000000
--- a/happstack-server-7.0.0-blaze-html-base64.patch
+++ /dev/null
@@ -1,24 +0,0 @@
---- happstack-server-7.0.0/happstack-server.cabal~	2012-11-09 21:06:02.966044346 +0900
-+++ happstack-server-7.0.0/happstack-server.cabal	2012-11-09 21:07:52.081366061 +0900
-@@ -78,8 +78,8 @@ Library
-                        Paths_happstack_server
- 
-   Build-Depends:       base,
--                       blaze-html >= 0.3 && < 0.5,
--                       base64-bytestring == 0.1.*,
-+                       blaze-html >= 0.3 && < 0.6, blaze-markup,
-+                       base64-bytestring == 1.*,
-                        bytestring,
-                        containers,
-                        directory,
-diff -up happstack-server-7.0.0/src/Happstack/Server/Response.hs~ happstack-server-7.0.0/src/Happstack/Server/Response.hs
---- happstack-server-7.0.0/src/Happstack/Server/Response.hs~	2012-03-30 01:00:41.000000000 +0900
-+++ happstack-server-7.0.0/src/Happstack/Server/Response.hs	2012-11-09 21:18:51.040743391 +0900
-@@ -40,6 +40,7 @@ import           Happstack.Server.SURI
- import           System.Locale                   (defaultTimeLocale)
- import           System.Time                     (CalendarTime, formatCalendarTime)
- import qualified Text.Blaze                      as Blaze
-+import qualified Text.Blaze.Html                 as Blaze
- import qualified Text.Blaze.Renderer.Utf8        as Blaze
- import           Text.Html                       (Html, renderHtml)
- import qualified Text.XHtml                      as XHtml (Html, renderHtml)
diff --git a/happstack-server-7.0.0-blaze-html.patch b/happstack-server-7.0.0-blaze-html.patch
new file mode 100644
index 0000000..9270c10
--- /dev/null
+++ b/happstack-server-7.0.0-blaze-html.patch
@@ -0,0 +1,42 @@
+diff -up happstack-server-7.0.0/happstack-server.cabal.2-blaze~ happstack-server-7.0.0/happstack-server.cabal
+--- happstack-server-7.0.0/happstack-server.cabal.2-blaze~	2012-11-10 13:04:14.796470433 +0900
++++ happstack-server-7.0.0/happstack-server.cabal	2012-11-10 13:10:44.152465822 +0900
+@@ -78,7 +78,7 @@ Library
+                        Paths_happstack_server
+ 
+   Build-Depends:       base,
+-                       blaze-html >= 0.3 && < 0.5,
++                       blaze-html >= 0.3 && < 0.6, blaze-markup,
+                        base64-bytestring == 0.1.*,
+                        bytestring,
+                        containers,
+@@ -88,7 +88,7 @@ Library
+                        hslogger >= 1.0.2,
+                        html,
+                        monad-control >= 0.3 && < 0.4,
+-                       mtl >= 2 && < 2.1,
++                       mtl >= 2 && < 2.2,
+                        old-locale,
+                        old-time,
+                        parsec < 4,
+@@ -97,7 +97,7 @@ Library
+                        template-haskell,
+                        text >= 0.10 && < 0.12,
+                        time,
+-                       transformers >= 0.1.3 && < 0.3,
++                       transformers >= 0.1.3 && < 0.4,
+                        transformers-base >= 0.4 && < 0.5,
+                        utf8-string >= 0.3.4 && < 0.4,
+                        xhtml,
+diff -up happstack-server-7.0.0/src/Happstack/Server/Response.hs.2-blaze~ happstack-server-7.0.0/src/Happstack/Server/Response.hs
+--- happstack-server-7.0.0/src/Happstack/Server/Response.hs.2-blaze~	2012-03-30 01:00:41.000000000 +0900
++++ happstack-server-7.0.0/src/Happstack/Server/Response.hs	2012-11-10 13:04:14.798470428 +0900
+@@ -39,7 +39,7 @@ import           Happstack.Server.Types
+ import           Happstack.Server.SURI           (ToSURI)
+ import           System.Locale                   (defaultTimeLocale)
+ import           System.Time                     (CalendarTime, formatCalendarTime)
+-import qualified Text.Blaze                      as Blaze
++import qualified Text.Blaze.Html                 as Blaze
+ import qualified Text.Blaze.Renderer.Utf8        as Blaze
+ import           Text.Html                       (Html, renderHtml)
+ import qualified Text.XHtml                      as XHtml (Html, renderHtml)
diff --git a/happstack-server-7.0.0-mtl-transformers.patch b/happstack-server-7.0.0-mtl-transformers.patch
deleted file mode 100644
index 78ef99b..0000000
--- a/happstack-server-7.0.0-mtl-transformers.patch
+++ /dev/null
@@ -1,21 +0,0 @@
-diff -u happstack-server-7.0.0/happstack-server.cabal\~ happstack-server-7.0.0/happstack-server.cabal
---- happstack-server-7.0.0/happstack-server.cabal~	2012-06-11 10:11:06.088763957 +0900
-+++ happstack-server-7.0.0/happstack-server.cabal	2012-06-11 10:17:14.556914595 +0900
-@@ -88,7 +88,7 @@
-                        hslogger >= 1.0.2,
-                        html,
-                        monad-control >= 0.3 && < 0.4,
--                       mtl >= 2 && < 2.1,
-+                       mtl >= 2 && < 2.2,
-                        old-locale,
-                        old-time,
-                        parsec < 4,
-@@ -97,7 +97,7 @@
-                        template-haskell,
-                        text >= 0.10 && < 0.12,
-                        time,
--                       transformers >= 0.1.3 && < 0.3,
-+                       transformers >= 0.1.3 && < 0.4,
-                        transformers-base >= 0.4 && < 0.5,
-                        utf8-string >= 0.3.4 && < 0.4,
-                        xhtml,