diff --git a/NanoVNASaver/about.py b/NanoVNASaver/about.py
index 69245aa..92217c1 100644
--- a/NanoVNASaver/about.py
+++ b/NanoVNASaver/about.py
@@ -14,5 +14,5 @@
 #  You should have received a copy of the GNU General Public License
 #  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-version = '0.2.1alpha'
+version = '0.2.1alpha1'
 debug = False
diff --git a/README.md b/README.md
index 660d747..b0bf7a3 100644
--- a/README.md
+++ b/README.md
@@ -100,10 +100,7 @@ For most users, this is already installed.
         git clone https://github.com/mihtjel/nanovna-saver
         cd nanovna-saver
         
-4. Change PyQt restriction in setup.py
-			`PyQt5==5.11.2` to `PyQt5`
-			        
-5. Install local pip packages
+4. Install local pip packages
 
         python3 -m pip install .
         NanoVNASaver
@@ -172,6 +169,8 @@ changes back to the community.
 ## Credits
 Original application by Rune B. Broberg (5Q5R)
 
+Contributions and changes by Holger Müller, David Hunt and others.
+
 TDR inspiration shamelessly stolen from the work of Salil (VU2CWA) at https://nuclearrambo.com/wordpress/accurately-measuring-cable-length-with-nanovna/
 
 TDR cable types by Larry Goga.
diff --git a/setup.py b/setup.py
index 595cd08..eb9200a 100644
--- a/setup.py
+++ b/setup.py
@@ -50,7 +50,7 @@ setup(
     },
     install_requires=[
         'pyserial',
-        'PyQt5>=5.11.2',
+        'PyQt5',
         'numpy',
         'scipy'
     ],