diff --git a/instrumentation/opentelemetry_phoenix/lib/opentelemetry_phoenix.ex b/instrumentation/opentelemetry_phoenix/lib/opentelemetry_phoenix.ex
index 3844055..717fdbd 100644
--- a/instrumentation/opentelemetry_phoenix/lib/opentelemetry_phoenix.ex
+++ b/instrumentation/opentelemetry_phoenix/lib/opentelemetry_phoenix.ex
@@ -131,7 +131,7 @@ defmodule OpentelemetryPhoenix do
     # ensure the correct span is current and update the status
     ctx = OpentelemetryTelemetry.set_current_telemetry_span(@tracer_id, meta)
 
-    Span.set_attribute(ctx, :"http.status", conn.status)
+    Span.set_attribute(ctx, :"http.status_code", conn.status)
 
     if conn.status >= 400 do
       Span.set_status(ctx, OpenTelemetry.status(:error, ""))
diff --git a/instrumentation/opentelemetry_phoenix/test/opentelemetry_phoenix_test.exs b/instrumentation/opentelemetry_phoenix/test/opentelemetry_phoenix_test.exs
index 83fc776..01e8af6 100644
--- a/instrumentation/opentelemetry_phoenix/test/opentelemetry_phoenix_test.exs
+++ b/instrumentation/opentelemetry_phoenix/test/opentelemetry_phoenix_test.exs
@@ -65,7 +65,7 @@ defmodule OpentelemetryPhoenixTest do
              "http.method": "GET",
              "http.route": "/users/:user_id",
              "http.scheme": "http",
-             "http.status": 200,
+             "http.status_code": 200,
              "http.target": "/users/123",
              "http.user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:81.0) Gecko/20100101 Firefox/81.0",
              "net.host.ip": "10.211.55.2",
@@ -155,7 +155,7 @@ defmodule OpentelemetryPhoenixTest do
              "http.method": "GET",
              "http.route": "/users/:user_id/exception",
              "http.scheme": "http",
-             "http.status": 500,
+             "http.status_code": 500,
              "http.target": "/users/123/exception",
              "http.user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:81.0) Gecko/20100101 Firefox/81.0",
              "net.host.ip": "10.211.55.2",
@@ -223,7 +223,7 @@ defmodule OpentelemetryPhoenixTest do
              "http.method": "GET",
              "http.route": "/users/:user_id/exception",
              "http.scheme": "http",
-             "http.status": 500,
+             "http.status_code": 500,
              "http.target": "/users/123/exception",
              "http.user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:81.0) Gecko/20100101 Firefox/81.0",
              "net.host.ip": "10.211.55.2",