diff --git a/build.fsx b/build.fsx
index 865cb7f4..6618a290 100644
--- a/build.fsx
+++ b/build.fsx
@@ -31,6 +31,7 @@ let buildPart = "0" // TODO: Fetch from TC
 let assemblyVersion = release.AssemblyVersion + "." + buildPart
 let packageVersion = release.NugetVersion
 let releaseNotes = release.Notes |> List.map (fun l -> l.Replace("*","").Replace("`","")) |> toLines
+trace (sprintf "Building Math.NET Numerics %s" release.NugetVersion)
 
 let summary = "Math.NET Numerics, providing methods and algorithms for numerical computations in science, engineering and every day use."
 let description = "Math.NET Numerics is the numerical foundation of the Math.NET project, aiming to provide methods and algorithms for numerical computations in science, engineering and every day use. "
diff --git a/build.sh b/build.sh
index 7beb7006..75a03e9f 100755
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
 if [ ! -f packages/FAKE/tools/FAKE.exe ]; then
-  mono .nuget/NuGet.exe install FAKE -OutputDirectory packages -ExcludeVersion
+  mono --runtime=v4.0 .nuget/NuGet.exe install FAKE -OutputDirectory packages -ExcludeVersion
 fi
-mono packages/FAKE/tools/FAKE.exe build.fsx $@
+mono --runtime=v4.0 packages/FAKE/tools/FAKE.exe build.fsx $@
diff --git a/vagrant-bootstrap.sh b/vagrant-bootstrap.sh
index 69538b43..1846a421 100644
--- a/vagrant-bootstrap.sh
+++ b/vagrant-bootstrap.sh
@@ -4,3 +4,4 @@ apt-get update
 apt-get -y install mono-complete
 apt-get -y install mono-tools-devel
 apt-get -y install fsharp
+mozroots --import --sync