diff --git a/docs/src/guides/jobs.md b/docs/src/guides/jobs.md
index 60646c33c..56fdd147a 100644
--- a/docs/src/guides/jobs.md
+++ b/docs/src/guides/jobs.md
@@ -253,7 +253,9 @@ import JuliaHub # hide
 job = JuliaHub.submit_job(
     JuliaHub.script"""
     using Oxygen, HTTP
-    PORT = parse(Int, ENV["PORT"])
+    # Environment variable name `PORT` was used in older JuliaHub environments
+    # and has been replaced with `JULIAHUB_APP_PORT` in newer environments 
+    PORT = parse(Int, get(ENV, "JULIAHUB_APP_PORT", ENV["PORT"]))
     @get "/" function(req::HTTP.Request)
         return "success"
     end
diff --git a/test/jobenvs/job-exposed-port/server.jl b/test/jobenvs/job-exposed-port/server.jl
index d4d20836d..6c0186594 100644
--- a/test/jobenvs/job-exposed-port/server.jl
+++ b/test/jobenvs/job-exposed-port/server.jl
@@ -1,6 +1,8 @@
 using Oxygen, HTTP
 
-const PORT = parse(Int, ENV["PORT"])
+# Environment variable name `PORT` was used in older JuliaHub environments
+# and has been replaced with `JULIAHUB_APP_PORT` in newer environments 
+const PORT = parse(Int, get(ENV, "JULIAHUB_APP_PORT", ENV["PORT"]))
 const NREQUESTS = Ref{Int}(0)
 
 function results_json()