diff --git a/.npmrc b/.npmrc
index 74507e103e0..b75deba9700 100644
--- a/.npmrc
+++ b/.npmrc
@@ -1,7 +1,7 @@
 runtime = electron
 target_arch = x64
-brave_electron_version = 5.1.0
+brave_electron_version = 5.1.1
 chromedriver_version = 2.35
-target = v5.1.0
+target = v5.1.1
 disturl=https://brave-laptop-binaries.s3.amazonaws.com/atom-shell/dist/
 build_from_source = true
diff --git a/tools/cibuild.py b/tools/cibuild.py
index 0a9ba93090e..c4cf4d30237 100755
--- a/tools/cibuild.py
+++ b/tools/cibuild.py
@@ -4,7 +4,7 @@
 import subprocess
 import sys
 import os.path
-MUON_VERSION = '5.1.0'
+MUON_VERSION = '5.1.1'
 CHROMEDRIVER_VERSION = '2.35'
 SOURCE_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
 TARGET_ARCH= os.environ['TARGET_ARCH'] if os.environ.has_key('TARGET_ARCH') else 'x64'