diff --git a/backend/src/Api/Api.csproj b/backend/src/Api/Api.csproj
index 00b2a8c..a9418bf 100644
--- a/backend/src/Api/Api.csproj
+++ b/backend/src/Api/Api.csproj
@@ -29,7 +29,7 @@
     <!-- MQTTnet v5: hand-rolled reconnect BackgroundService (ManagedClient was removed in v5). -->
     <PackageReference Include="MQTTnet" Version="5.2.0.1603" />
     <!-- OpenTelemetry stack mirrors the proven test-api versions. -->
-    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.16.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.19.1" />
     <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.16.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.16.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.16.0" />
diff --git a/backend/src/Api/packages.lock.json b/backend/src/Api/packages.lock.json
index e6e5f50..00e6c5e 100644
--- a/backend/src/Api/packages.lock.json
+++ b/backend/src/Api/packages.lock.json
@@ -28,11 +28,11 @@
       },
       "OpenTelemetry.Exporter.OpenTelemetryProtocol": {
         "type": "Direct",
-        "requested": "[1.16.0, )",
-        "resolved": "1.16.0",
-        "contentHash": "gzYLY8sVDY5FYtVlCYSzBYX53xslRlvBLxwFYOdNIhc76SgKdFYUoDQXOeQI3WPBCrZp51QNcP6fZHh1+HtpIQ==",
+        "requested": "[1.19.1, )",
+        "resolved": "1.19.1",
+        "contentHash": "vsYYOBf/KxNubnuoja8pjJ9LG0zCC9HAYPay+R6N5ZKZMbhNdKWbaq6JZqJqTvK+55rudiqErJySekf9ql8okA==",
         "dependencies": {
-          "OpenTelemetry": "1.16.0"
+          "OpenTelemetry": "1.19.1"
         }
       },
       "OpenTelemetry.Extensions.Hosting": {
@@ -141,23 +141,23 @@
       },
       "OpenTelemetry": {
         "type": "Transitive",
-        "resolved": "1.16.0",
-        "contentHash": "nE/Px3MUvQC8c0UG0DOP5OJE7vMtiMaPYi/6TkSS/o/O0s/oPq+8WaPYTVEPzb7lwu/QyLgknc+sFm2FjPXe2A==",
+        "resolved": "1.19.1",
+        "contentHash": "6ywhc3upf+dq8EsOohj7I7zS3l4yX9vfbtFkvyEC8xIUY4Z9iDIOVuke356eCAzIZaWtmwmmyl2UXYCp5n7I3Q==",
         "dependencies": {
-          "OpenTelemetry.Api.ProviderBuilderExtensions": "1.16.0"
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "1.19.1"
         }
       },
       "OpenTelemetry.Api": {
         "type": "Transitive",
-        "resolved": "1.16.0",
-        "contentHash": "WZP8Eb6vZTeNqeV+fjBitc7iefBoTHIhaWorqg/h/YiQBlcQJu0bICuTqKV0XRyjiE0eWs80yLlnUtHAFSkFWA=="
+        "resolved": "1.19.1",
+        "contentHash": "9JKIH+xrV0HNTFjQC8zrx9gZpDOMEljN5Htg/U0VE2IvO3N+7bKALCCsGy5tp09marX5dd8UkrgQFoLaulIBRw=="
       },
       "OpenTelemetry.Api.ProviderBuilderExtensions": {
         "type": "Transitive",
-        "resolved": "1.16.0",
-        "contentHash": "hZwaHAkXvUNn9+cS+vEvYBgIrIQOQRz2cIRUODZ5gxHsDsLeNCueLgZFkybopjE0jUhLut6lm5eL3LTqbW0hMg==",
+        "resolved": "1.19.1",
+        "contentHash": "HtGe72B/IhzKqdU0a3fNE5osax/Cegwxd+p4u6lOFy20nsgmeaFuP2NRyFs1WvrOv/bpkII3IvvBkKoZXG8BLg==",
         "dependencies": {
-          "OpenTelemetry.Api": "1.16.0"
+          "OpenTelemetry.Api": "1.19.1"
         }
       },
       "Swashbuckle.AspNetCore.Swagger": {