diff --git a/scripts/install b/scripts/install
index 2519364..8c903b5 100644
--- a/scripts/install
+++ b/scripts/install
@@ -149,7 +149,7 @@ ynh_script_progression --message="Installing Ruby..." --weight=424
 
 ynh_install_ruby --ruby_version=2.6.5
 /opt/rbenv/versions/2.6.5/bin/gem update --system
-#/opt/rbenv/versions/2.6.5/bin/gem install bundler --no-document
+/opt/rbenv/versions/2.6.5/bin/gem install bundler:1.17.3 --no-document
 
 #=================================================
 # MODIFY A CONFIG FILE
diff --git a/scripts/upgrade b/scripts/upgrade
index edff694..9c7eaf7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -237,7 +237,7 @@ ynh_script_progression --message="Installing Ruby..." --weight=424
 
 ynh_install_ruby --ruby_version=2.6.5
 /opt/rbenv/versions/2.6.5/bin/gem update --system
-#/opt/rbenv/versions/2.6.5/bin/gem install bundler
+/opt/rbenv/versions/2.6.5/bin/gem install bundler:1.17.3 --no-document
 
 #=================================================
 # MODIFY A CONFIG FILE