diff --git a/scripts/install b/scripts/install
index 219826c..ce6f218 100644
--- a/scripts/install
+++ b/scripts/install
@@ -189,7 +189,7 @@ echo onlyoffice-documentserver onlyoffice/ds-port select ${port} | sudo debconf-
 ynh_print_info "Install OnlyOffice..."
 
 wget $source
-apt install ./onlyoffice-documentserver_amd64.deb
+apt install -y ./onlyoffice-documentserver_amd64.deb
 
 #=================================================
 # MODIFY A CONFIG FILE
diff --git a/scripts/restore b/scripts/restore
index 6b4a36b..393921e 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -132,7 +132,7 @@ echo onlyoffice-documentserver onlyoffice/ds-port select ${port} | sudo debconf-
 ynh_print_info "Reinstalling OnlyOffice..."
 
 wget $source
-apt install ./onlyoffice-documentserver_amd64.deb
+apt install -y ./onlyoffice-documentserver_amd64.deb
 
 #=================================================
 # GENERIC FINALIZATION
diff --git a/scripts/upgrade b/scripts/upgrade
index ac82c80..039ce11 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -128,7 +128,7 @@ echo "deb http://download.onlyoffice.com/repo/debian squeeze main" | sudo tee /e
 ynh_print_info "Upgrading OnlyOffice..."
 
 wget $source
-apt install ./onlyoffice-documentserver_amd64.deb
+apt install -y ./onlyoffice-documentserver_amd64.deb
 
 ### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
 ### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.