diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b4cb99..49a0e0e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.7.4
+
+- Fix: Script ENV not being passed properly
+- Update dependencies
+
 ## 0.7.3
 
 - Fix: Exit with code
diff --git a/lib/src/config.dart b/lib/src/config.dart
index f0a06ed..0132798 100644
--- a/lib/src/config.dart
+++ b/lib/src/config.dart
@@ -90,7 +90,7 @@ class ScriptRunnerConfig {
       scripts: _parseScriptsList(source['scripts'], fileSystem: fs),
       env: env,
       workingDir: source['cwd'],
-      fileSystem: fileSystem,
+      fileSystem: fs,
       lineLength: source['line_length'] ?? 80,
       configSource: configSource,
     );
diff --git a/lib/src/runnable_script.dart b/lib/src/runnable_script.dart
index 0ef94cd..f5de23d 100644
--- a/lib/src/runnable_script.dart
+++ b/lib/src/runnable_script.dart
@@ -2,6 +2,7 @@ import 'dart:io' as io;
 
 import 'package:file/file.dart';
 import 'package:file/local.dart';
+import 'package:file/memory.dart';
 import 'package:script_runner/src/config.dart';
 // ignore: no_leading_underscores_for_library_prefixes
 import 'package:script_runner/src/utils.dart' as _utils;
@@ -30,7 +31,7 @@ class RunnableScript {
 
   /// The environment variables to run the script in.
   /// This map is appended to the one given in the config.
-  final Map<String, String>? env;
+  final Map<String, String> env;
 
   /// Other scripts in the config which are runnable by this script.
   /// The script loader pre-loads these as temporary aliases to allow combined scripts to be run.
@@ -57,7 +58,7 @@ class RunnableScript {
     required this.args,
     this.description,
     this.workingDir,
-    this.env,
+    this.env = const {},
     FileSystem? fileSystem,
     this.displayCmd = false,
     this.appendNewline = false,
@@ -94,23 +95,26 @@ class RunnableScript {
         description: description,
         displayCmd: displayCmd,
         appendNewline: appendNewline,
+        env: map['env'] as Map<String, String>? ?? {},
       );
     } catch (e) {
-      throw StateError('Failed to parse script, arguments: $map, $fileSystem. Error: $e');
+      throw StateError(
+          'Failed to parse script, arguments: $map, $fileSystem. Error: $e');
     }
   }
 
   /// Runs the current script with the given extra arguments.
-  Future<int> run(List<String> extraArgs) async {
+  Future<int> run([List<String> extraArgs = const []]) async {
     final effectiveArgs = args + extraArgs;
     final config = await ScriptRunnerConfig.get(_fileSystem);
 
     final scrContents = _getScriptContents(config, extraArgs: extraArgs);
     final scrPath = _getScriptPath();
+    final scrFile = _fileSystem.file(scrPath);
 
-    await _fileSystem.file(scrPath).writeAsString(scrContents);
+    await scrFile.writeAsString(scrContents);
 
-    if (config.shell.os != OS.windows) {
+    if (config.shell.os != OS.windows && _fileSystem is! MemoryFileSystem) {
       final result = await io.Process.run("chmod", ["u+x", scrPath]);
       if (result.exitCode != 0) throw Exception(result.stderr);
     }
@@ -148,7 +152,7 @@ class RunnableScript {
     final result = await io.Process.start(
       config.shell.shell,
       [config.shell.shellExecFlag, scrPath],
-      environment: {...?config.env, ...?env},
+      environment: {...?config.env, ...env},
       workingDirectory: workingDir ?? config.workingDir,
       mode: io.ProcessStartMode.inheritStdio,
       includeParentEnvironment: true,
@@ -157,7 +161,8 @@ class RunnableScript {
     return exitCode;
   }
 
-  String _getScriptPath() => _fileSystem.path.join(_fileSystem.systemTempDirectory.path, 'script_runner_$name.sh');
+  String _getScriptPath() => _fileSystem.path
+      .join(_fileSystem.systemTempDirectory.path, 'script_runner_$name.sh');
 
   String _getScriptContents(
     ScriptRunnerConfig config, {
@@ -177,8 +182,12 @@ class RunnableScript {
         ].join('\n');
       case OS.linux:
       case OS.macos:
-        return [...preloadScripts.map((e) => "[[ ! \$(which ${e.name}) ]] && alias ${e.name}='scr ${e.name}'"), script]
-            .join('\n');
+        return [
+          ...preloadScripts.map((e) =>
+              "[[ ! \$(which ${e.name}) ]] && alias ${e.name}='scr ${e.name}'"),
+          script
+        ].join('\n');
     }
   }
 }
+
diff --git a/pubspec.yaml b/pubspec.yaml
index 18132b6..6d2f8f8 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: script_runner
 description: Run all your project-related scripts in a portable, simple config.
-version: 0.7.3
+version: 0.7.4
 homepage: https://casraf.dev/projects/dart-script-runner
 repository: https://github.com/chenasraf/dart_script_runner
 license: MIT
diff --git a/test/config_test.dart b/test/config_test.dart
index 18cd484..81b45e4 100644
--- a/test/config_test.dart
+++ b/test/config_test.dart
@@ -57,6 +57,43 @@ void main() {
         expect(testScr.args, []);
       });
     });
+
+    group('env injection', () {
+      fs = MemoryFileSystem();
+      final fooFile = fs.file('/tmp/foo.txt');
+
+      setUp(() async {
+        fs = MemoryFileSystem();
+        await _writePubspec(
+          fs,
+          [
+            'script_runner:',
+            '  shell:',
+            '    linux: /bin/zsh',
+            '    macos: /bin/bash',
+            '    windows: powershell.exe',
+            '  scripts:',
+            '    - name: test',
+            '      cwd: .',
+            '      cmd: "echo \\"\$FOO\\" > ${fooFile.path}"',
+            '      env:',
+            '        FOO: bar',
+          ].join('\n'),
+        );
+      });
+
+      test('works', () async {
+        final conf = await ScriptRunnerConfig.get(fs);
+        final testScr = conf.scriptsMap['test']!;
+        expect(testScr.name, 'test');
+        expect(testScr.cmd, 'echo "\$FOO" > ${fooFile.path}');
+        expect(testScr.args, []);
+        expect(testScr.env, {'FOO': 'bar'});
+        // await testScr.run();
+        // final contents = await fooFile.readAsString();
+        // expect(contents, 'bar\n');
+      });
+    });
   });
 
   group('ScriptRunnerShellConfig', () {
@@ -147,7 +184,8 @@ Future<void> _writeCustomConf(FileSystem fs, [String? contents]) async {
   final homeDir = fs.directory(Platform.environment['HOME']!);
   homeDir.create(recursive: true);
   fs.currentDirectory = homeDir;
-  final pubFile = fs.file(path.join(fs.currentDirectory.path, 'script_runner.yaml'));
+  final pubFile =
+      fs.file(path.join(fs.currentDirectory.path, 'script_runner.yaml'));
   pubFile.create(recursive: true);
   print('writing custom conf to ${pubFile.path}');
   await pubFile.writeAsString(
@@ -181,3 +219,4 @@ Future<void> _writePubspec(FileSystem fs, [String? contents]) async {
         ].join('\n'),
   );
 }
+