diff --git a/.gitignore b/.gitignore
index a788d63..869cf38 100644
--- a/.gitignore
+++ b/.gitignore
@@ -67,3 +67,8 @@ dkms.conf
 __pycache__
 *pyc
 .idea
+
+# build stuff
+build/
+dist/
+athena_signal.egg-info/
diff --git a/pack.sh b/pack.sh
index 360c16d..03eb692 100755
--- a/pack.sh
+++ b/pack.sh
@@ -10,7 +10,7 @@ swig -python athena_signal/dios_signal.i
 python setup.py bdist_wheel sdist
 
 #3. Pip install the athena-siganl.
-pip install --ignore-installed  dist/athena_signal-*.whl
+pip install --force-reinstall dist/athena_signal-*.whl
 
 #4. Test the athena_signal model. [Optional]
 python examples/athena_signal_test.py