diff --git a/README.md b/README.md
index 68eab1f..36ddcef 100644
--- a/README.md
+++ b/README.md
@@ -188,7 +188,7 @@ If you have any questions/suggestions feel free to raise an issue or open a new
 
 [Vincent Burel](https://github.com/vburel2018) for creating Voicemeeter and its SDK.
 
-[PySimpleGUI](https://github.com/PySimpleGUI) team for creating an awesome GUI framework.
+[FreeSimpleGUI](https://github.com/spyoungtech/FreeSimpleGUI) a fork of the now closed source PySimpleGUI project.
 
 [spec]: ./SPECIFICATION.md
 [voicemeeter]: https://voicemeeter.com/
diff --git a/pdm.lock b/pdm.lock
index 95ef088..29ead8a 100644
--- a/pdm.lock
+++ b/pdm.lock
@@ -5,7 +5,7 @@
 groups = ["default", "build", "lint", "test"]
 strategy = ["cross_platform"]
 lock_version = "4.4.1"
-content_hash = "sha256:6bd288ca3e76b99966beba75e19bb50ff7f0787e1b1981269f7a850a22706b0f"
+content_hash = "sha256:d8f7b44e465a0e57f724712da8b6b57d7cfb492a5d18f7c09ee9948a36d46b95"
 
 [[package]]
 name = "altgraph"
@@ -66,6 +66,15 @@ files = [
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
 ]
 
+[[package]]
+name = "freesimplegui"
+version = "5.1.0"
+summary = "The free-forever Python GUI framework."
+files = [
+    {file = "FreeSimpleGUI-5.1.0-py3-none-any.whl", hash = "sha256:9dee6408bc0df2d30327f775e5e61160085f63d0d1c2f41f83d00cb250e507c2"},
+    {file = "freesimplegui-5.1.0.tar.gz", hash = "sha256:2be084404bac9675a3082df8eb8cea4872121f166fc37298081203961618268f"},
+]
+
 [[package]]
 name = "macholib"
 version = "1.16.2"
@@ -290,13 +299,13 @@ files = [
 
 [[package]]
 name = "voicemeeter-api"
-version = "2.5.3"
-requires_python = ">=3.10,<4.0"
+version = "2.6.0"
+requires_python = "<4.0,>=3.10"
 summary = "A Python wrapper for the Voiceemeter API"
 dependencies = [
     "tomli<3.0.0,>=2.0.1; python_version < \"3.11\"",
 ]
 files = [
-    {file = "voicemeeter_api-2.5.3-py3-none-any.whl", hash = "sha256:00c1f5b4027844d09ae19042f1662501dc28b1cee12a4238503790a50293c8f7"},
-    {file = "voicemeeter_api-2.5.3.tar.gz", hash = "sha256:b40f77e94446b4a5ab561c777109bdaf9c2478dfaa19e728c91ade3b44226704"},
+    {file = "voicemeeter_api-2.6.0-py3-none-any.whl", hash = "sha256:c2ef8eb063ce3aeac4827ad7883150c407a0effb0fde3778782cd3024a295255"},
+    {file = "voicemeeter_api-2.6.0.tar.gz", hash = "sha256:db93f27b58ce927c7d56084b224e1d0cdd6406ab7f26e4f99a9a873495a3d2e7"},
 ]
diff --git a/pyproject.toml b/pyproject.toml
index c69eee9..9defca1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,9 +4,9 @@ version = "0.6.3"
 description = "A Voicemeeter app compatible with NVDA"
 authors = [{ name = "onyx-and-iris", email = "code@onyxandiris.online" }]
 dependencies = [
-    "pysimplegui==4.60.5",
     "pyparsing>=3.1.1",
     "voicemeeter-api>=2.5.3",
+    "freesimplegui>=5.1.0",
 ]
 requires-python = ">=3.10,<3.12"
 readme = "README.md"
diff --git a/src/nvda_voicemeeter/builder.py b/src/nvda_voicemeeter/builder.py
index b003b13..ffdf2b8 100644
--- a/src/nvda_voicemeeter/builder.py
+++ b/src/nvda_voicemeeter/builder.py
@@ -1,4 +1,4 @@
-import PySimpleGUI as psg
+import FreeSimpleGUI as psg
 
 from . import util
 from .compound import LabelSlider
diff --git a/src/nvda_voicemeeter/compound.py b/src/nvda_voicemeeter/compound.py
index 14164fb..1f246f7 100644
--- a/src/nvda_voicemeeter/compound.py
+++ b/src/nvda_voicemeeter/compound.py
@@ -1,6 +1,6 @@
 from typing import Union
 
-import PySimpleGUI as psg
+import FreeSimpleGUI as psg
 
 from . import util
 
diff --git a/src/nvda_voicemeeter/popup.py b/src/nvda_voicemeeter/popup.py
index f8a5d2c..15eb29c 100644
--- a/src/nvda_voicemeeter/popup.py
+++ b/src/nvda_voicemeeter/popup.py
@@ -1,7 +1,7 @@
 import logging
 from pathlib import Path
 
-import PySimpleGUI as psg
+import FreeSimpleGUI as psg
 
 from . import util
 from .compound import CompSlider, GateSlider, LabelSliderAdvanced
diff --git a/src/nvda_voicemeeter/util.py b/src/nvda_voicemeeter/util.py
index 2a90d82..5f50a55 100644
--- a/src/nvda_voicemeeter/util.py
+++ b/src/nvda_voicemeeter/util.py
@@ -1,6 +1,6 @@
 from typing import Iterable
 
-import PySimpleGUI as psg
+import FreeSimpleGUI as psg
 
 
 def get_asio_input_spinbox_index(channel, num) -> int:
diff --git a/src/nvda_voicemeeter/window.py b/src/nvda_voicemeeter/window.py
index 8f5132c..85266e0 100644
--- a/src/nvda_voicemeeter/window.py
+++ b/src/nvda_voicemeeter/window.py
@@ -2,7 +2,7 @@ import json
 import logging
 from pathlib import Path
 
-import PySimpleGUI as psg
+import FreeSimpleGUI as psg
 
 from . import configuration, models, util
 from .builder import Builder