diff --git a/Dockerfile b/Dockerfile
index 2e97b7b..d979863 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:22-alpine AS build
+FROM node:26-alpine AS build
 
 WORKDIR /app
 COPY . /app
@@ -19,7 +19,7 @@ RUN set -ex \
   && chown -R node:node /app \
   && chmod +r /app/testpk.pem
 
-FROM node:22-alpine AS final
+FROM node:26-alpine AS final
 LABEL \
     org.opencontainers.image.title="http-https-echo" \
     org.opencontainers.image.description="Docker image that echoes request data as JSON; listens on HTTP/S, with various extra features, useful for debugging." \
diff --git a/index.js b/index.js
index c75d5b6..b331a1d 100644
--- a/index.js
+++ b/index.js
@@ -176,7 +176,7 @@ app.all('/{*splat}', (req, res) => {
   }
 
   //Delay the response for a user defined time
-  const sleepTime = parseInt(req.headers["x-set-response-delay-ms"] || req.query["x-set-response-delay-ms"], 0)
+  const sleepTime = parseInt(req.headers["x-set-response-delay-ms"] || req.query["x-set-response-delay-ms"]) || 0;
   sleep(sleepTime).then(() => {
 
     //Set the response content type to what the user wants