diff --git a/Formula/ponyc.rb b/Formula/ponyc.rb
index 2970085c01..d95b8f1693 100644
--- a/Formula/ponyc.rb
+++ b/Formula/ponyc.rb
@@ -3,6 +3,7 @@ class Ponyc < Formula
   homepage "http://www.ponylang.org"
   url "https://github.com/ponylang/ponyc/archive/0.11.1.tar.gz"
   sha256 "5bac06a49940c7be74b8ff9798e39e57bea8d8b549c6dbe61bbf0067a117f50b"
+  revision 1
 
   bottle do
     cellar :any_skip_relocation
@@ -12,7 +13,7 @@ class Ponyc < Formula
   end
 
   depends_on :macos => :yosemite
-  depends_on "llvm"
+  depends_on "llvm@3.8"
   depends_on "libressl"
   depends_on "pcre2"
   needs :cxx11
@@ -28,7 +29,7 @@ class Ponyc < Formula
 
   def install
     ENV.cxx11
-    ENV["LLVM_CONFIG"]="#{Formula["llvm"].opt_bin}/llvm-config"
+    ENV["LLVM_CONFIG"]="#{Formula["llvm@3.8"].opt_bin}/llvm-config-3.8"
     system "make", "config=release", "destdir=#{prefix}", "install", "verbose=1"
   end