diff --git a/lib/BUCK b/lib/BUCK
index d585cc3..9e64d07 100644
--- a/lib/BUCK
+++ b/lib/BUCK
@@ -6,8 +6,8 @@
 
 maven_jar(
   name = 'gson',
-  id = 'com.google.code.gson:gson:2.1',
-  sha1 = '2e66da15851f9f5b5079228f856c2f090ba98c38',
+  id = 'com.google.code.gson:gson:2.7',
+  sha1 = '751f548c85fa49f330cecbb1875893f971b33c4e',
 )
 
 maven_jar(
diff --git a/lib/guice/BUCK b/lib/guice/BUCK
index 59470ce..35790d7 100644
--- a/lib/guice/BUCK
+++ b/lib/guice/BUCK
@@ -1,4 +1,4 @@
-VERSION = '4.0'
+VERSION = '4.1.0'
 EXCLUDE = [
   'META-INF/DEPENDENCIES',
   'META-INF/LICENSE',
@@ -20,7 +20,7 @@
 maven_jar(
   name = 'multibindings',
   id = 'com.google.inject.extensions:guice-multibindings:' + VERSION,
-  sha1 = 'f4509545b4470bbcc865aa500ad6fef2e97d28bf',
+  sha1 = '3b27257997ac51b0f8d19676f1ea170427e86d51',
   exclude_java_sources = True,
   exclude = EXCLUDE + [
     'META-INF/maven/com.google.guava/guava/pom.properties',
@@ -32,7 +32,7 @@
 maven_jar(
   name = 'guice_library',
   id = 'com.google.inject:guice:' + VERSION,
-  sha1 = '0f990a43d3725781b6db7cd0acf0a8b62dfd1649',
+  sha1 = 'eeb69005da379a10071aa4948c48d89250febb07',
   deps = [':aopalliance'],
   exclude_java_sources = True,
   exclude = EXCLUDE + [
@@ -45,7 +45,7 @@
 maven_jar(
   name = 'guice-assistedinject',
   id = 'com.google.inject.extensions:guice-assistedinject:' + VERSION,
-  sha1 = '8fa6431da1a2187817e3e52e967535899e2e46ca',
+  sha1 = 'af799dd7e23e6fe8c988da12314582072b07edcb',
   exclude = EXCLUDE,
 )