diff --git a/manifest.json b/manifest.json
index 6b41a65..5e1bd73 100644
--- a/manifest.json
+++ b/manifest.json
@@ -7,7 +7,7 @@
         "fr": "Une application web de comptes partagés à plusieurs"
     },
     "url": "http://ihatemoney.org/",
-    "version": "4.1.5~ynh1",
+    "version": "4.1.5~ynh2",
     "license": "free",
     "maintainer": {
         "name": "Jocelyn Delalande",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 29243e4..8c54da6 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -40,10 +40,13 @@ init_virtualenv () {
 }
 
 pip_install () {
+    # SQLAlchemy requirement is workaround https://github.com/pallets/flask-sqlalchemy/issues/910
+    # Might be removed later when IHM dependency set will no longer prevent working installation.
     /opt/yunohost/ihatemoney/venv/bin/pip install --upgrade \
      'gunicorn>=19.3.0' \
      'PyMySQL>=0.9,<0.10' \
      'ihatemoney>=4,<5' \
+     'SQLAlchemy<1.4' \
 
 }