diff --git a/util/bot/DEPS b/util/bot/DEPS
index 738fbd3..0a4de21 100644
--- a/util/bot/DEPS
+++ b/util/bot/DEPS
@@ -18,7 +18,7 @@
 
 deps = {
   'boringssl/util/bot/gyp':
-    Var('chromium_git') + '/external/gyp.git' + '@' + '4a9b712d5cb4a5ba7a9950128a7219569caf7263',
+    Var('chromium_git') + '/external/gyp.git' + '@' + '61259d585ce99d9de8b35188cd0025bdbcb58411',
 }
 
 hooks = [
diff --git a/util/bot/UPDATING b/util/bot/UPDATING
new file mode 100644
index 0000000..4e5e443
--- /dev/null
+++ b/util/bot/UPDATING
@@ -0,0 +1,20 @@
+This directory consumes tools from other repositories for use on the
+bots. To update to newer revisions, follow these instructions:
+
+DEPS: Set the external/gyp.git revision to the revision used in Chromium, found at
+    https://chromium.googlesource.com/chromium/src/+/master/DEPS
+    (Search for 'gyp.git'.)
+
+go/bootstrap.py: Set TOOLSET_VERSION to the latest release of Go, found at
+    https://golang.org/dl/.
+
+update_clang.py: Set CLANG_REVISION and CLANG_SUB_REVISION to the values used in
+    Chromium, found at
+    https://chromium.googlesource.com/chromium/src/+/master/tools/clang/scripts/update.py
+
+vs_toolchain.py: Set the hash in _GetDesiredVsToolchainHashes to the toolchain
+    used in Chromium, found at
+    https://chromium.googlesource.com/chromium/src/+/master/build/vs_toolchain.py
+    This may require taking other updates to that file.
+
+TODO(davidben): Update the .sha1 files and record instructions here.
diff --git a/util/bot/go/bootstrap.py b/util/bot/go/bootstrap.py
index 4a52d9e..28aa13d 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 = 'go1.5.1'
+TOOLSET_VERSION = 'go1.6'
 
 # 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 1824393..48d0d9b 100644
--- a/util/bot/update_clang.py
+++ b/util/bot/update_clang.py
@@ -22,7 +22,7 @@
 # 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 = "233105"
+CLANG_REVISION = "261368"
 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 2a54b9e..175502e 100644
--- a/util/bot/vs_toolchain.py
+++ b/util/bot/vs_toolchain.py
@@ -65,7 +65,7 @@
   """Load a list of SHA1s corresponding to the toolchains that we want installed
   to build with."""
   # Use Chromium's VS2013.
-  return ['ee7d718ec60c2dc5d255bbe325909c2021a7efef']
+  return ['4087e065abebdca6dbd0caca2910c6718d2ec67f']
 
 
 def FindDepotTools():