diff --git a/contrib/Vagrantfile b/contrib/Vagrantfile
index a638587..5eec59f 100644
--- a/contrib/Vagrantfile
+++ b/contrib/Vagrantfile
@@ -67,6 +67,7 @@
 
 # Haskell dependencies
 sudo apt-get install -qq ghc cabal-install libghc-binary-dev libghc-network-dev libghc-http-dev libghc-hashable-dev libghc-unordered-containers-dev libghc-vector-dev
+sudo cabal update
 
 # Lua dependencies
 sudo apt-get install -qq lua5.2 lua5.2-dev