diff --git a/Dockerfile b/Dockerfile
index dd42d12..3fc0eeb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
-ARG JAVA_VERSION=11
+ARG JAVA_VERSION=17
 # This image additionally contains function core tools – useful when using custom extensions
-FROM mcr.microsoft.com/azure-functions/java:3.0-java$JAVA_VERSION-build AS installer-env
+FROM mcr.microsoft.com/azure-functions/java:4.0-java$JAVA_VERSION-build AS installer-env
 
 COPY . /src/java-function-app
 RUN cd /src/java-function-app && \
@@ -11,9 +11,7 @@ RUN cd /src/java-function-app && \
     cp -a . /home/site/wwwroot
 
 # This image is ssh enabled
-#FROM mcr.microsoft.com/azure-functions/java:3.0-java$JAVA_VERSION-appservice
-# This image isn't ssh enabled
-FROM mcr.microsoft.com/azure-functions/java:3.0-java$JAVA_VERSION
+FROM mcr.microsoft.com/azure-functions/java:4-java$JAVA_VERSION
 
 ENV AzureWebJobsScriptRoot=/home/site/wwwroot \
     AzureFunctionsJobHost__Logging__Console__IsEnabled=true