diff --git a/packages/flutter_driver/pubspec.yaml b/packages/flutter_driver/pubspec.yaml
index ec7bc60655c..ca21bc9ce93 100644
--- a/packages/flutter_driver/pubspec.yaml
+++ b/packages/flutter_driver/pubspec.yaml
@@ -8,7 +8,7 @@ environment:
   sdk: '>=1.19.0 <2.0.0'
 
 dependencies:
-  file: '^1.0.1'
+  file: '^2.0.1'
   json_rpc_2: '^2.0.0'
   matcher: '>=0.12.0 <1.0.0'
   path: '^1.4.0'
diff --git a/packages/flutter_tools/lib/src/asset.dart b/packages/flutter_tools/lib/src/asset.dart
index 729904bd5eb..39bfbec2eae 100644
--- a/packages/flutter_tools/lib/src/asset.dart
+++ b/packages/flutter_tools/lib/src/asset.dart
@@ -338,7 +338,7 @@ Map<_Asset, List<_Asset>> _parseAssets(
     return result;
 
   excludeDirs = excludeDirs.map(
-    (String exclude) => path.absolute(exclude) + fs.pathSeparator).toList();
+    (String exclude) => path.absolute(exclude) + fs.path.separator).toList();
 
   if (manifestDescriptor.containsKey('assets')) {
     for (String asset in manifestDescriptor['assets']) {
diff --git a/packages/flutter_tools/lib/src/base/process.dart b/packages/flutter_tools/lib/src/base/process.dart
index 4a5f6b7e9f2..c8edfbfd8a5 100644
--- a/packages/flutter_tools/lib/src/base/process.dart
+++ b/packages/flutter_tools/lib/src/base/process.dart
@@ -199,7 +199,7 @@ void _traceCommand(List<String> args, { String workingDirectory }) {
   if (workingDirectory == null)
     printTrace(argsText);
   else
-    printTrace("[$workingDirectory${fs.pathSeparator}] $argsText");
+    printTrace("[$workingDirectory${fs.path.separator}] $argsText");
 }
 
 String _runWithLoggingSync(List<String> cmd, {
diff --git a/packages/flutter_tools/lib/src/base/utils.dart b/packages/flutter_tools/lib/src/base/utils.dart
index 6c10a4d260a..805d6a9b34c 100644
--- a/packages/flutter_tools/lib/src/base/utils.dart
+++ b/packages/flutter_tools/lib/src/base/utils.dart
@@ -87,7 +87,7 @@ String getElapsedAsMilliseconds(Duration duration) => '${duration.inMilliseconds
 /// Return a relative path if [fullPath] is contained by the cwd, else return an
 /// absolute path.
 String getDisplayPath(String fullPath) {
-  String cwd = fs.currentDirectory.path + fs.pathSeparator;
+  String cwd = fs.currentDirectory.path + fs.path.separator;
   return fullPath.startsWith(cwd) ?  fullPath.substring(cwd.length) : fullPath;
 }
 
diff --git a/packages/flutter_tools/lib/src/commands/analyze_base.dart b/packages/flutter_tools/lib/src/commands/analyze_base.dart
index cd419110a52..8d2c3fab827 100644
--- a/packages/flutter_tools/lib/src/commands/analyze_base.dart
+++ b/packages/flutter_tools/lib/src/commands/analyze_base.dart
@@ -58,7 +58,7 @@ bool inRepo(List<String> fileList) {
   if (fileList == null || fileList.isEmpty)
     fileList = <String>[path.current];
   String root = path.normalize(path.absolute(Cache.flutterRoot));
-  String prefix = root + fs.pathSeparator;
+  String prefix = root + fs.path.separator;
   for (String file in fileList) {
     file = path.normalize(path.absolute(file));
     if (file == root || file.startsWith(prefix))
diff --git a/packages/flutter_tools/lib/src/commands/build.dart b/packages/flutter_tools/lib/src/commands/build.dart
index ba09ac063d6..a45884369fe 100644
--- a/packages/flutter_tools/lib/src/commands/build.dart
+++ b/packages/flutter_tools/lib/src/commands/build.dart
@@ -87,7 +87,7 @@ class BuildCleanCommand extends FlutterCommand {
   @override
   Future<Null> runCommand() async {
     Directory buildDir = fs.directory(getBuildDirectory());
-    printStatus("Deleting '${buildDir.path}${fs.pathSeparator}'.");
+    printStatus("Deleting '${buildDir.path}${fs.path.separator}'.");
 
     if (!buildDir.existsSync())
       return;
diff --git a/packages/flutter_tools/lib/src/commands/build_aot.dart b/packages/flutter_tools/lib/src/commands/build_aot.dart
index b7f14f0e720..5ef7e3432bd 100644
--- a/packages/flutter_tools/lib/src/commands/build_aot.dart
+++ b/packages/flutter_tools/lib/src/commands/build_aot.dart
@@ -66,7 +66,7 @@ class BuildAotCommand extends BuildSubCommand {
     if (outputPath == null)
       throwToolExit(null);
 
-    printStatus('Built to $outputPath${fs.pathSeparator}.');
+    printStatus('Built to $outputPath${fs.path.separator}.');
   }
 }
 
diff --git a/packages/flutter_tools/pubspec.yaml b/packages/flutter_tools/pubspec.yaml
index 068e8edd62f..1be17ba4463 100644
--- a/packages/flutter_tools/pubspec.yaml
+++ b/packages/flutter_tools/pubspec.yaml
@@ -12,7 +12,7 @@ dependencies:
   args: ^0.13.4
   coverage: ^0.8.0
   crypto: '>=1.1.1 <3.0.0'
-  file: '^1.0.1'
+  file: 2.0.1
   http: ^0.11.3
   intl: '>=0.14.0 <0.15.0'
   json_rpc_2: ^2.0.0
@@ -23,7 +23,7 @@ dependencies:
   package_config: '>=0.1.5 <2.0.0'
   path: ^1.4.0
   platform: 1.0.1
-  process: 1.1.0
+  process: 2.0.0
   pub_semver: ^1.0.0
   stack_trace: ^1.4.0
   usage: ^3.0.0