diff --git a/debian-bootstrap.sh b/debian-bootstrap.sh
index 116cb76b..747e1c5d 100755
--- a/debian-bootstrap.sh
+++ b/debian-bootstrap.sh
@@ -180,12 +180,11 @@ cd /tmp \
 echo "/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/" > /etc/ld.so.conf.d/openjdk.conf \
     && ldconfig
 
-# currently the repo seems broken
-# # llvm-4.0 for llvm-hs (separate since it needs wget)
-# wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add - \
-#     && add-apt-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-4.0 main" \
-#     && apt-get update \
-#     && apt-get install -y llvm-4.0
+# llvm-4.0 for llvm-hs (separate since it needs wget)
+wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add - \
+    && add-apt-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-4.0 main" \
+    && apt-get update \
+    && apt-get install -y llvm-4.0
 
 ## non-free repo for mediabus-fdk-aac
 #apt-add-repository multiverse \