diff --git a/scripts/install b/scripts/install
index a10258f..9db57da 100755
--- a/scripts/install
+++ b/scripts/install
@@ -94,7 +94,6 @@ cp -R ../sources/* $final_path/
 pushd "$final_path"
 	ynh_exec_warn_less openssl req -newkey rsa:2048 -nodes -keyout data/key.pem -x509 -days 365 -out data/cert.pem \
 	-subj "/C=/ST=/L=/O=/OU=/CN=/emailAddress="
-	#chown root:ssl-cert data/{key.pem,cert.pem}
     chmod 640 data/{key.pem,cert.pem}
 popd
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 973af93..adf69b7 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -89,6 +89,13 @@ then
 
 	# Remove the tmp directory securely
 	ynh_secure_remove --file="$tmpdir"
+
+	# Recreate certificates
+	pushd "$final_path"
+	ynh_exec_warn_less openssl req -newkey rsa:2048 -nodes -keyout data/key.pem -x509 -days 365 -out data/cert.pem \
+	-subj "/C=/ST=/L=/O=/OU=/CN=/emailAddress="
+    chmod 640 data/{key.pem,cert.pem}
+popd
 fi
 
 #=================================================