diff --git a/AUTHORS b/AUTHORS
index 43e4110e2ac0b..aeac8782fc0f1 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -269,6 +269,7 @@ a license to everyone to use it as detailed in LICENSE.)
 * Vilibald Wanča <vilibald@wvi.cz>
 * Alex Hixon <alex@alexhixon.com>
 * Vladimir Davidovich <thy.ringo@gmail.com>
+* Dylan McKay <dylanmckay34@gmail.com>
 * Christophe Gragnic <cgragnic@netc.fr>
 * Murphy McCauley <murphy.mccauley@gmail.com>
 * Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
diff --git a/tools/shared.py b/tools/shared.py
index c7b1068cb4974..5c68f6fccbd6b 100644
--- a/tools/shared.py
+++ b/tools/shared.py
@@ -320,7 +320,7 @@ def fix_js_engine(old, new):
 
 # Expectations
 
-EXPECTED_LLVM_VERSION = (3, 9)
+EXPECTED_LLVM_VERSION = (4, 0)
 
 actual_clang_version = None