diff --git a/data/helpers.d/apt b/data/helpers.d/apt
index 3b4b199d0..dcea0c976 100644
--- a/data/helpers.d/apt
+++ b/data/helpers.d/apt
@@ -96,7 +96,7 @@ ynh_package_version() {
 # Requires YunoHost version 2.4.0.3 or higher.
 ynh_apt() {
     ynh_wait_dpkg_free
-    LC_ALL=C DEBIAN_FRONTEND=noninteractive apt-get --assume-yes $@
+    LC_ALL=C DEBIAN_FRONTEND=noninteractive apt-get --assume-yes --quiet -o=Dpkg::Use-Pty=0 $@
 }
 
 # Update package index files
diff --git a/src/yunohost/tools.py b/src/yunohost/tools.py
index 790857f08..0e9d23e87 100644
--- a/src/yunohost/tools.py
+++ b/src/yunohost/tools.py
@@ -564,7 +564,7 @@ def tools_upgrade(operation_logger, apps=None, system=False):
         dist_upgrade = "DEBIAN_FRONTEND=noninteractive"
         dist_upgrade += " APT_LISTCHANGES_FRONTEND=none"
         dist_upgrade += " apt-get"
-        dist_upgrade += " --fix-broken --show-upgraded --assume-yes"
+        dist_upgrade += " --fix-broken --show-upgraded --assume-yes --quiet -o=Dpkg::Use-Pty=0"
         for conf_flag in ["old", "miss", "def"]:
             dist_upgrade += ' -o Dpkg::Options::="--force-conf{}"'.format(conf_flag)
         dist_upgrade += " dist-upgrade"