diff --git a/util/bot/DEPS b/util/bot/DEPS
index 0d67e3d..7b9f39e 100644
--- a/util/bot/DEPS
+++ b/util/bot/DEPS
@@ -22,7 +22,7 @@
 
 deps = {
   'boringssl/util/bot/android_tools': {
-    'url': Var('chromium_git') + '/android_tools.git' + '@' + 'ca9dc7245b888c75307f0619e4a39fb46a82de66',
+    'url': Var('chromium_git') + '/android_tools.git' + '@' + 'ca0bd083872ad925881736fe2bedc3ff855e08f5',
     'condition': 'checkout_android',
   },
 
diff --git a/util/bot/go/bootstrap.py b/util/bot/go/bootstrap.py
index 86335aa..ec5aa3e 100755
--- a/util/bot/go/bootstrap.py
+++ b/util/bot/go/bootstrap.py
@@ -45,7 +45,7 @@
 EXE_SFX = '.exe' if sys.platform == 'win32' else ''
 
 # Pinned version of Go toolset to download.
-TOOLSET_VERSION = 'go1.9.1'
+TOOLSET_VERSION = 'go1.9.2'
 
 # Platform dependent portion of a download URL. See http://golang.org/dl/.
 TOOLSET_VARIANTS = {
diff --git a/util/bot/update_clang.py b/util/bot/update_clang.py
index 3164750..ee66153 100644
--- a/util/bot/update_clang.py
+++ b/util/bot/update_clang.py
@@ -19,8 +19,8 @@
 # CLANG_REVISION and CLANG_SUB_REVISION determine the build of clang
 # to use. These should be synced with tools/clang/scripts/update.py in
 # Chromium.
-CLANG_REVISION = '313786'
-CLANG_SUB_REVISION=1
+CLANG_REVISION = '315613'
+CLANG_SUB_REVISION=2
 
 PACKAGE_VERSION = "%s-%s" % (CLANG_REVISION, CLANG_SUB_REVISION)
 
diff --git a/util/bot/vs_toolchain.py b/util/bot/vs_toolchain.py
index 64da79a..153a6ed 100644
--- a/util/bot/vs_toolchain.py
+++ b/util/bot/vs_toolchain.py
@@ -87,8 +87,8 @@
     # Update 3 final with 10.0.15063.468 SDK and no vctip.exe.
     return ['f53e4598951162bad6330f7a167486c7ae5db1e5']
   if env_version == '2017':
-    # VS 2017 Update 3.2 with 10.0.15063.468 SDK and patched setenv.cmd.
-    return ['a9e1098bba66d2acccc377d5ee81265910f29272']
+    # VS 2017 Update 4 with 10.0.15063.468 SDK.
+    return ['88c3b62e1eb0893b8cd57e3f4859c3af27907f64']
   raise Exception('Unsupported VS version %s' % env_version)