diff --git a/gateway/Dockerfile b/gateway/Dockerfile
index dcdc342..d8a8c29 100644
--- a/gateway/Dockerfile
+++ b/gateway/Dockerfile
@@ -1,4 +1,4 @@
-FROM nginx:1.17-alpine as dynamic_conf
+FROM nginx:1.20-alpine as dynamic_conf
 
 #-------------------------------------------------------------------
 FROM dynamic_conf as default_conf