diff --git a/debian/postinst b/debian/postinst
index 526edbb..275ec3e 100755
--- a/debian/postinst
+++ b/debian/postinst
@@ -64,6 +64,9 @@ case "$1" in
         # Install sensorpajen package itself
         echo "Installing sensorpajen application..."
         cd /opt/sensorpajen
+        # Clean up any stale bytecode before building wheel
+        find . -name "*.pyc" -delete
+        find . -name "__pycache__" -type d -delete
         venv/bin/pip install --no-deps . || {
             echo "Error: Failed to install sensorpajen package"
             exit 1
diff --git a/debian/sensorpajen/DEBIAN/postinst b/debian/sensorpajen/DEBIAN/postinst
index 526edbb..275ec3e 100755
--- a/debian/sensorpajen/DEBIAN/postinst
+++ b/debian/sensorpajen/DEBIAN/postinst
@@ -64,6 +64,9 @@ case "$1" in
         # Install sensorpajen package itself
         echo "Installing sensorpajen application..."
         cd /opt/sensorpajen
+        # Clean up any stale bytecode before building wheel
+        find . -name "*.pyc" -delete
+        find . -name "__pycache__" -type d -delete
         venv/bin/pip install --no-deps . || {
             echo "Error: Failed to install sensorpajen package"
             exit 1