diff --git a/build.ps1 b/build.ps1
index 6e48462f0..22074cfe8 100644
--- a/build.ps1
+++ b/build.ps1
@@ -33,7 +33,7 @@ cd $PSScriptRoot
 $repoFolder = $PSScriptRoot
 $env:REPO_FOLDER = $repoFolder
 
-$koreBuildZip="https://github.com/aspnet/KoreBuild/archive/rel/1.0.1.zip"
+$koreBuildZip="https://github.com/aspnet/KoreBuild/archive/rel/1.0.4.zip"
 if ($env:KOREBUILD_ZIP)
 {
     $koreBuildZip=$env:KOREBUILD_ZIP
@@ -64,4 +64,4 @@ if (!(Test-Path $buildFolder)) {
     }
 }
 
-&"$buildFile" $args
\ No newline at end of file
+&"$buildFile" $args
diff --git a/build.sh b/build.sh
index 023d73a87..dde2a8d4c 100755
--- a/build.sh
+++ b/build.sh
@@ -2,7 +2,7 @@
 repoFolder="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 cd $repoFolder
 
-koreBuildZip="https://github.com/aspnet/KoreBuild/archive/rel/1.0.1.zip"
+koreBuildZip="https://github.com/aspnet/KoreBuild/archive/rel/1.0.4.zip"
 if [ ! -z $KOREBUILD_ZIP ]; then
     koreBuildZip=$KOREBUILD_ZIP
 fi
@@ -43,4 +43,4 @@ if test ! -d $buildFolder; then
     fi
 fi
 
-$buildFile -r $repoFolder "$@"
\ No newline at end of file
+$buildFile -r $repoFolder "$@"