diff --git a/Pipfile b/Pipfile
index 97dc0d11..ad56ff06 100644
--- a/Pipfile
+++ b/Pipfile
@@ -6,13 +6,14 @@ verify_ssl = true
 [dev-packages]
 GitPython = "*"
 
-
 [packages]
 fonttools = "*"
 psutil = "*"
 pynput = "*"
 pystray = "*"
-PyQt5 = "*"
+PyQt5 = "~=5.15"
+qtpy = "*"
+cairosvg = "~=2.4.2"
 
 [requires]
 python_version = "3.8"
diff --git a/guiscrcpy.desktop b/guiscrcpy.desktop
index d3a8d835..efbbcf74 100644
--- a/guiscrcpy.desktop
+++ b/guiscrcpy.desktop
@@ -1,5 +1,5 @@
 [Desktop Entry]
-Version=3.9.3
+Version=4.0.alpha1
 Name=guiscrcpy
 GenericName=guiscrcpy
 Comment=Open Source Android Screen Mirroring System
diff --git a/guiscrcpy/version.py b/guiscrcpy/version.py
index fba10c20..f23ffdba 100644
--- a/guiscrcpy/version.py
+++ b/guiscrcpy/version.py
@@ -20,4 +20,4 @@
 
 """
 
-VERSION = '3.9.3'
+VERSION = '4.0.alpha1'
diff --git a/requirements.txt b/requirements.txt
index 0a5f5d94..f15b690b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
-PyQt5>=5.14,<5.15
+PyQt5~=5.15
 pynput>=1.6
-pystray==0.14.4
-cairosvg
+cairosvg~=2.4
+QtPy~=1.9
+psutil~=5.7
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 18e6696a..c5147f98 100755
--- a/setup.py
+++ b/setup.py
@@ -53,7 +53,7 @@
 
 setup(
     name='guiscrcpy',
-    version='3.9.3',
+    version='4.0.alpha1',
     description='An Open Source - Fast - Android Screen Mirroring system.',
     long_description=long_description,
     long_description_content_type='text/markdown',
diff --git a/snap/gui/guiscrcpy.desktop b/snap/gui/guiscrcpy.desktop
index 6154497c..2f0499f4 100644
--- a/snap/gui/guiscrcpy.desktop
+++ b/snap/gui/guiscrcpy.desktop
@@ -1,5 +1,5 @@
 [Desktop Entry]
-Version=3.9.3
+Version=4.0.alpha1
 Name=guiscrcpy
 GenericName=guiscrcpy
 Comment=Open Source Android Screen Mirroring System
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index d24841c3..76e4f4b7 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -1,5 +1,5 @@
 name: guiscrcpy
-version: 3.9.3
+version: 4.0.alpha1
 summary: An opensource GUI for android screen mirroring
 description: |
   A full fledged GUI integration for the award winning open source scrcpy, for