diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9bddaadf..43a0e619 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -31,7 +31,7 @@ jobs:
       - name: Setup test execution environment.
         run: pip3 install -r requirements-meta.txt
       - name: Run tox tests
-        run: tox -- --durations=0 --timeout=30
+        run: tox -- --durations=0 --timeout=240
 
   typecheck:
     strategy:
diff --git a/README.md b/README.md
index 6b70d27d..b4e5e671 100644
--- a/README.md
+++ b/README.md
@@ -100,7 +100,7 @@ Additional options can be passed to `eel.start()` as keyword arguments.
 Some of the options include the mode the app is in (e.g. 'chrome'), the port the app runs on, the host name of the app, and adding additional command line flags.
 
 As of Eel v0.12.0, the following options are available to `start()`:
- - **mode**, a string specifying what browser to use (e.g. `'chrome'`, `'electron'`, `'edge'`, `'custom'`). Can also be `None` or `False` to not open a window. *Default: `'chrome'`*
+ - **mode**, a string specifying what browser to use (e.g. `'chrome'`, `'electron'`, `'edge'`,`'msie'`, `'custom'`). Can also be `None` or `False` to not open a window. *Default: `'chrome'`*
  - **host**, a string specifying what hostname to use for the Bottle server. *Default: `'localhost'`)*
  - **port**, an int specifying what port to use for the Bottle server. Use `0` for port to be picked automatically. *Default: `8000`*.
  - **block**, a bool saying whether or not the call to `start()` should block the calling thread. *Default: `True`*
diff --git a/eel/browsers.py b/eel/browsers.py
index d555b2d9..89b040e9 100644
--- a/eel/browsers.py
+++ b/eel/browsers.py
@@ -7,13 +7,15 @@
 import eel.chrome as chm
 import eel.electron as ele
 import eel.edge as edge
+import eel.msIE as ie
 #import eel.firefox as ffx      TODO
 #import eel.safari as saf       TODO
 
 _browser_paths: Dict[str, str] = {}
 _browser_modules: Dict[str, ModuleType] = {'chrome':   chm,
                                            'electron': ele,
-                                           'edge': edge}
+                                           'edge': edge,
+                                           'msie':ie}
 
 
 def _build_url_from_dict(page: Dict[str, str], options: OptionsDictT) -> str:
diff --git a/eel/edge.py b/eel/edge.py
index 7f2dab1e..cea91894 100644
--- a/eel/edge.py
+++ b/eel/edge.py
@@ -9,9 +9,16 @@
 
 
 def run(_path: str, options: OptionsDictT, start_urls: List[str]) -> None:
-    cmd = 'start microsoft-edge:{}'.format(start_urls[0])
-    sps.Popen(cmd, stdout=sys.stdout, stderr=sys.stderr, stdin=sps.PIPE, shell=True)
-
+    if not isinstance(options['cmdline_args'], list):
+        raise TypeError("'cmdline_args' option must be of type List[str]")
+    args: List[str] = options['cmdline_args']
+    if options['app_mode']:
+        cmd = 'start msedge --app={} '.format(start_urls[0])
+        cmd = cmd + (" ".join(args))
+        sps.Popen(cmd, stdout=sys.stdout, stderr=sys.stderr, stdin=sps.PIPE, shell=True)
+    else:
+        cmd = "start msedge --new-window "+(" ".join(args)) +" "+(start_urls[0])
+        sps.Popen(cmd,stdout=sys.stdout, stderr=sys.stderr, stdin=sps.PIPE, shell=True)
 
 def find_path() -> bool:
     if platform.system() == 'Windows':
diff --git a/eel/msIE.py b/eel/msIE.py
new file mode 100644
index 00000000..7f7f2e26
--- /dev/null
+++ b/eel/msIE.py
@@ -0,0 +1,20 @@
+import platform
+import subprocess as sps
+import sys
+from typing import List
+
+from eel.types import OptionsDictT
+
+name: str = 'MSIE'
+
+
+def run(_path: str, options: OptionsDictT, start_urls: List[str]) -> None:
+    cmd = 'start microsoft-edge:{}'.format(start_urls[0])
+    sps.Popen(cmd, stdout=sys.stdout, stderr=sys.stderr, stdin=sps.PIPE, shell=True)
+
+
+def find_path() -> bool:
+    if platform.system() == 'Windows':
+        return True
+
+    return False