diff --git a/modoboa_installer/package.py b/modoboa_installer/package.py
index 5354b359..a188cac0 100644
--- a/modoboa_installer/package.py
+++ b/modoboa_installer/package.py
@@ -57,12 +57,12 @@ def preconfigure(self, name, question, qtype, answer):
     def install(self, name):
         """Install a package."""
         self.update()
-        utils.exec_cmd("apt-get -o Dpkg::Progress-Fancy=0 install --quiet --assume-yes {}".format(name))
+        utils.exec_cmd("apt-get -o Dpkg::Progress-Fancy=0 install --quiet --assume-yes -o DPkg::options::=--force-confold {}".format(name))
 
     def install_many(self, names):
         """Install many packages."""
         self.update()
-        return utils.exec_cmd("apt-get -o Dpkg::Progress-Fancy=0 install --quiet --assume-yes {}".format(
+        return utils.exec_cmd("apt-get -o Dpkg::Progress-Fancy=0 install --quiet --assume-yes -o DPkg::options::=--force-confold {}".format(
             " ".join(names)))
 
     def get_installed_version(self, name):