diff --git a/dev/bots/docs.sh b/dev/bots/docs.sh
index 4d9aaab..fe07298 100755
--- a/dev/bots/docs.sh
+++ b/dev/bots/docs.sh
@@ -3,20 +3,29 @@
 
 # If you want to run this script locally, make sure you run it from
 # the root of the flutter repository.
+export FLUTTER_ROOT="$PWD"
 
 # This is called from travis_upload.sh on Travis.
 
 # Make sure dart is installed
 bin/flutter --version
 
+# If the pub cache directory exists in the root, then use that.
+FLUTTER_PUB_CACHE="$FLUTTER_ROOT/.pub-cache"
+if [ -d "$FLUTTER_PUB_CACHE" ]; then
+  # This has to be exported, because pub interprets setting it
+  # to the empty string in the same way as setting it to ".".
+  export PUB_CACHE="${PUB_CACHE:-"$FLUTTER_PUB_CACHE"}"
+fi
+
 # Install dartdoc.
 bin/cache/dart-sdk/bin/pub global activate dartdoc 0.14.1
 
 # This script generates a unified doc set, and creates
 # a custom index.html, placing everything into dev/docs/doc.
 (cd dev/tools; ../../bin/cache/dart-sdk/bin/pub get)
-FLUTTER_ROOT=$PWD bin/cache/dart-sdk/bin/dart dev/tools/dartdoc.dart
-FLUTTER_ROOT=$PWD bin/cache/dart-sdk/bin/dart dev/tools/java_and_objc_doc.dart
+bin/cache/dart-sdk/bin/dart dev/tools/dartdoc.dart
+bin/cache/dart-sdk/bin/dart dev/tools/java_and_objc_doc.dart
 
 # Ensure google webmaster tools can verify our site.
 cp dev/docs/google2ed1af765c529f57.html dev/docs/doc
diff --git a/dev/bots/test.dart b/dev/bots/test.dart
index 05135fb..dbfc795 100644
--- a/dev/bots/test.dart
+++ b/dev/bots/test.dart
@@ -14,6 +14,7 @@
 final String flutter = path.join(flutterRoot, 'bin', Platform.isWindows ? 'flutter.bat' : 'flutter');
 final String dart = path.join(flutterRoot, 'bin', 'cache', 'dart-sdk', 'bin', Platform.isWindows ? 'dart.exe' : 'dart');
 final String pub = path.join(flutterRoot, 'bin', 'cache', 'dart-sdk', 'bin', Platform.isWindows ? 'pub.bat' : 'pub');
+final String pubCache = path.join(flutterRoot, '.pub-cache');
 final String flutterTestArgs = Platform.environment['FLUTTER_TEST_ARGS'];
 final bool hasColor = stdout.supportsAnsiEscapes;
 
@@ -204,8 +205,12 @@
   final List<String> args = <String>['run', 'test', '-j1', '-rexpanded'];
   if (testPath != null)
     args.add(testPath);
+  final Map<String, String> pubEnvironment = <String, String>{'DART_VM_OPTIONS': '--assert-initializer'};
+  if (new Directory(pubCache).existsSync()) {
+    pubEnvironment['PUB_CACHE'] = pubCache;
+  }
   return _runCommand(pub, args, workingDirectory: workingDirectory,
-      environment: <String, String>{'DART_VM_OPTIONS': '--assert-initializer'});
+      environment: pubEnvironment);
 }
 
 class EvalResult {
diff --git a/dev/tools/dartdoc.dart b/dev/tools/dartdoc.dart
index 4bb53d0..36816c7 100644
--- a/dev/tools/dartdoc.dart
+++ b/dev/tools/dartdoc.dart
@@ -65,14 +65,25 @@
   }
   new File('dev/docs/lib/temp_doc.dart').writeAsStringSync(contents.toString());
 
+  final String flutterRoot = Directory.current.path;
+  final Map<String, String> pubEnvironment = <String, String>{
+    'FLUTTER_ROOT': flutterRoot,
+  };
+
+  // If there's a .pub-cache dir in the flutter root, use that.
+  final String pubCachePath = '$flutterRoot/.pub-cache';
+  if (new Directory(pubCachePath).existsSync()) {
+    pubEnvironment['PUB_CACHE'] = pubCachePath;
+  }
+
+  final String pubExecutable = '$flutterRoot/bin/cache/dart-sdk/bin/pub';
+
   // Run pub.
   Process process = await Process.start(
-    '../../bin/cache/dart-sdk/bin/pub',
+    pubExecutable,
     <String>['get'],
     workingDirectory: 'dev/docs',
-    environment: <String, String>{
-      'FLUTTER_ROOT': Directory.current.path,
-    },
+    environment: pubEnvironment,
   );
   printStream(process.stdout, prefix: 'pub:stdout: ');
   printStream(process.stderr, prefix: 'pub:stderr: ');
@@ -84,9 +95,10 @@
 
   // Verify which version of dartdoc we're using.
   final ProcessResult result = Process.runSync(
-    '../../bin/cache/dart-sdk/bin/pub',
+    pubExecutable,
     <String>['global', 'run', 'dartdoc', '--version'],
     workingDirectory: 'dev/docs',
+    environment: pubEnvironment,
   );
   print('\n${result.stdout}');
 
@@ -113,9 +125,10 @@
   }
 
   process = await Process.start(
-    '../../bin/cache/dart-sdk/bin/pub',
+    pubExecutable,
     args,
     workingDirectory: 'dev/docs',
+    environment: pubEnvironment,
   );
   printStream(process.stdout, prefix: 'dartdoc:stdout: ',
     filter: kVerbose ? const <Pattern>[] : <Pattern>[