diff --git a/Library/Homebrew/language/haskell.rb b/Library/Homebrew/language/haskell.rb
index f3758c2f51..ee0a061624 100644
--- a/Library/Homebrew/language/haskell.rb
+++ b/Library/Homebrew/language/haskell.rb
@@ -16,7 +16,7 @@ module Language
         saved_home = ENV["HOME"]
         ENV["HOME"] = home
 
-        system "cabal", "sandbox", "init"
+        system "cabal", "v1-sandbox", "init"
         cabal_sandbox_bin = pwd/".cabal-sandbox/bin"
         mkdir_p cabal_sandbox_bin
 
@@ -25,7 +25,7 @@ module Language
         ENV.prepend_path "PATH", cabal_sandbox_bin
 
         # avoid updating the cabal package database more than once
-        system "cabal", "update" unless (home/".cabal/packages").exist?
+        system "cabal", "v1-update" unless (home/".cabal/packages").exist?
 
         yield
 
@@ -41,7 +41,7 @@ module Language
       end
 
       def cabal_sandbox_add_source(*args)
-        system "cabal", "sandbox", "add-source", *args
+        system "cabal", "v1-sandbox", "add-source", *args
       end
 
       def cabal_install(*args)
@@ -55,11 +55,11 @@ module Language
         # needed value by a formula at this time (February 2016) was 43,478 for
         # git-annex, so 100,000 should be enough to avoid most gratuitous
         # backjumps build failures.
-        system "cabal", "install", "--jobs=#{make_jobs}", "--max-backjumps=100000", *args
+        system "cabal", "v1-install", "--jobs=#{make_jobs}", "--max-backjumps=100000", *args
       end
 
       def cabal_configure(flags)
-        system "cabal", "configure", flags
+        system "cabal", "v1-configure", flags
       end
 
       def cabal_install_tools(*tools)