diff --git a/scripts/_common.sh b/scripts/_common.sh
index da9bbcc..7f8eda6 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -40,6 +40,14 @@ init_virtualenv () {
     /opt/yunohost/ihatemoney/venv/bin/pip install 'setuptools>=18.5'
 }
 
+pip_install () {
+    sudo /opt/yunohost/ihatemoney/venv/bin/pip install --upgrade \
+     'gunicorn>=19.3.0' \
+     'PyMySQL>=0.9,<0.10' \
+     'ihatemoney>=3,<4' \
+
+}
+
 configure_nginx () {
     local domain=$1
     local path=$2
diff --git a/scripts/install b/scripts/install
index c7ab888..b6f8061 100755
--- a/scripts/install
+++ b/scripts/install
@@ -43,10 +43,7 @@ create_unix_user
 
 # Prepare venv
 init_virtualenv
-sudo /opt/yunohost/ihatemoney/venv/bin/pip install \
-     'gunicorn>=19.3.0' \
-     'PyMySQL>=0.9,<0.10' \
-     'ihatemoney>=3,<4' \
+pip_install
 
 create_system_dirs
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 16c9dcf..474d852 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -9,7 +9,6 @@ app=$YNH_APP_INSTANCE_NAME
 
 # Installation paths
 INSTALL_DIR=/opt/yunohost/ihatemoney
-PIP=${INSTALL_DIR}/venv/bin/pip
 
 # Source YunoHost helpers
 . /usr/share/yunohost/helpers
@@ -85,7 +84,7 @@ fi
 
 
 # Upgrade code and dependencies
-sudo ${PIP} install --upgrade  'gunicorn>=19.3.0' PyMySQL 'ihatemoney>=3,<4'
+pip_install
 
 
 #-----------------------POST-UPGRADE MIGRATIONS-----------------