diff --git a/make_osx_package.sh b/make_osx_package.sh
index 3e4317140..a3fb34f5d 100755
--- a/make_osx_package.sh
+++ b/make_osx_package.sh
@@ -28,7 +28,7 @@ cabal sandbox init
 echo Building pandoc...
 cabal clean
 # Use cpphs to avoid problems with clang cpp on ghc 7.8 osx:
-cabal install cpphs alex happy hsb2hs
+cabal install cpphs hsb2hs
 cabal install --ghc-options="-optl-mmacosx-version-min=10.6" --reinstall --flags="embed_data_files" --ghc-options '-pgmPcpphs -optP--cpp'
 cabal install --ghc-options="-optl-mmacosx-version-min=10.6" --reinstall --flags="embed_data_files" pandoc-citeproc --ghc-options '-pgmPcpphs -optP--cpp'
 
diff --git a/windows/make-windows-installer.bat b/windows/make-windows-installer.bat
index 0bd05a0e3..d4816fa69 100644
--- a/windows/make-windows-installer.bat
+++ b/windows/make-windows-installer.bat
@@ -3,7 +3,7 @@ cd ..
 cabal update
 cabal sandbox init
 cabal clean
-cabal install hsb2hs alex happy
+cabal install hsb2hs
 if %errorlevel% neq 0 exit /b %errorlevel%
 cabal install -v1 --force --reinstall --flags="embed_data_files" . pandoc-citeproc
 if %errorlevel% neq 0 exit /b %errorlevel%