diff --git a/scripts/rebuild_swagger.sh b/scripts/rebuild_swagger.sh
index 2a4f6f5d0..f1eba3767 100755
--- a/scripts/rebuild_swagger.sh
+++ b/scripts/rebuild_swagger.sh
@@ -20,11 +20,11 @@ function download_codegen() {
     if [[ ! -e "swagger-codegen-cli.jar" ]]
     then
       if [[ -e "$(command -v wget)" ]]; then
-        wget http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.2.3/swagger-codegen-cli-2.2.3.jar -O swagger-codegen-cli.jar
+        wget https://repo1.maven.org/maven2/io/swagger/swagger-codegen-cli/2.2.3/swagger-codegen-cli-2.2.3.jar -O swagger-codegen-cli.jar
       elif [[ -e "$(command -v curl)" ]]; then
-        curl http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.2.3/swagger-codegen-cli-2.2.3.jar > swagger-codegen-cli.jar
+        curl https://repo1.maven.org/maven2/io/swagger/swagger-codegen-cli/2.2.3/swagger-codegen-cli-2.2.3.jar > swagger-codegen-cli.jar
       else
-        "Cannot download 'http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.2.3/swagger-codegen-cli-2.2.3.jar' automatically (no curl or wget found on PATH)"
+        "Cannot download 'https://repo1.maven.org/maven2/io/swagger/swagger-codegen-cli/2.2.3/swagger-codegen-cli-2.2.3.jar' automatically (no curl or wget found on PATH)"
         "You can download it manually into this directory to continue"
         exit 1
       fi
diff --git a/ui/Dockerfile b/ui/Dockerfile
index 2ec71ec81..f02e66e73 100644
--- a/ui/Dockerfile
+++ b/ui/Dockerfile
@@ -21,7 +21,7 @@ RUN npm install
 
 RUN /ui/node_modules/.bin/ng build --prod
 
-FROM nginx
+FROM nginx:1.19.0
 
 COPY --from=1 /ui/dist /ui/dist
 ADD ./ui/nginx.prod.conf /etc/nginx/nginx.conf