diff --git a/util/bot/DEPS b/util/bot/DEPS
index 5d6e8cd..1eb563d 100644
--- a/util/bot/DEPS
+++ b/util/bot/DEPS
@@ -28,7 +28,7 @@
   },
 
   'boringssl/util/bot/android_tools': {
-    'url': Var('chromium_git') + '/android_tools.git' + '@' + 'e958d6ea74442d4e0849bb8a018d215a0e78981d',
+    'url': Var('chromium_git') + '/android_tools.git' + '@' + '347a7c8078a009e98995985b7ab6ec6b35696dea',
     'condition': 'checkout_android',
   },
 
@@ -36,18 +36,18 @@
     Var('chromium_git') + '/external/gyp.git' + '@' + 'd61a9397e668fa9843c4aa7da9e79460fe590bfb',
 
   'boringssl/util/bot/libFuzzer': {
-    'url': Var('chromium_git') + '/chromium/llvm-project/compiler-rt/lib/fuzzer.git' +'@' + '2a53098584c48af50aec3fb51febe5e651489774',
+    'url': Var('chromium_git') + '/chromium/llvm-project/compiler-rt/lib/fuzzer.git' +'@' + 'e847d8a9b47158695593d5693b0f69250472b229',
     'condition': 'checkout_fuzzer',
   },
 
   # Update the following revisions from
-  # https://chromium.googlesource.com/chromium/buildtools/+/master/DEPS
+  # https://chromium.googlesource.com/chromium/src/+/master/buildtools/DEPS
   'boringssl/util/bot/libcxx': {
-    'url': Var('chromium_git') + '/chromium/llvm-project/libcxx.git' + '@' + 'e713cc0acf1ae8b82f451bf58ebef67a46ceddfb',
+    'url': Var('chromium_git') + '/chromium/llvm-project/libcxx.git' + '@' + '955113db37563c8632e31ddcff2047845553d7ff',
     'condition': 'checkout_libcxx',
   },
   'boringssl/util/bot/libcxxabi': {
-    'url': Var('chromium_git') + '/chromium/llvm-project/libcxxabi.git' + '@' + '307bb62985575b2e3216a8cfd7e122e0574f33a9',
+    'url': Var('chromium_git') + '/chromium/llvm-project/libcxxabi.git' + '@' + '0d529660e32d77d9111912d73f2c74fc5fa2a858',
     'condition': 'checkout_libcxx',
   },
 }
diff --git a/util/bot/go/bootstrap.py b/util/bot/go/bootstrap.py
index 1a33c79..d295748 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 = 'go1.11.4'
+TOOLSET_VERSION = 'go1.12.1'
 
 # 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 b1f7776..5151b13 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 = '349417'
-CLANG_SUB_REVISION=2
+CLANG_REVISION = '357569'
+CLANG_SUB_REVISION = 1
 
 PACKAGE_VERSION = "%s-%s" % (CLANG_REVISION, CLANG_SUB_REVISION)
 
diff --git a/util/bot/vs_toolchain.py b/util/bot/vs_toolchain.py
index 2530662..feaaa7c 100644
--- a/util/bot/vs_toolchain.py
+++ b/util/bot/vs_toolchain.py
@@ -87,9 +87,9 @@
     # Update 3 final with 10.0.15063.468 SDK and no vctip.exe.
     return ['f53e4598951162bad6330f7a167486c7ae5db1e5']
   if env_version == '2017':
-    # VS 2017 Update 7.1 (15.7.1) with 10.0.17134.12 SDK, rebuilt with
-    # dbghelp.dll fix.
-    return ['3bc0ec615cf20ee342f3bc29bc991b5ad66d8d2c']
+    # VS 2017 Update 9 (15.9.3) with 10.0.17763.132 SDK, 10.0.17134 version of
+    # d3dcompiler_47.dll, with ARM64 libraries.
+    return ['818a152b3f1da991c1725d85be19a0f27af6bab4']
   raise Exception('Unsupported VS version %s' % env_version)