diff --git a/backend/src/Api/Api.csproj b/backend/src/Api/Api.csproj
index 00b2a8c..2b43088 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="1.19.0" />
     <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..655c88a 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": "[1.19.0, )",
+        "resolved": "1.19.0",
+        "contentHash": "x1QtTiMXvM4POUv92FX0S3KPLCwaFpZ76NwNsd4Os7jWDT+oESkfDSdP7JisoTdMP3x+s4xjXlc7eXEuU5SBMw==",
         "dependencies": {
-          "OpenTelemetry": "1.16.0"
+          "OpenTelemetry": "1.19.0"
         }
       },
       "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": "1.19.0",
+        "contentHash": "tH3Y3ABOCcUXbnz/jntnfEXcSxEy+GzS2niNqwJPIcNdAYUpP09QHLaAwcJExeS+ibfmlcSkmIfWlKhe7yVjIA==",
         "dependencies": {
-          "OpenTelemetry.Api.ProviderBuilderExtensions": "1.16.0"
+          "OpenTelemetry.Api.ProviderBuilderExtensions": "1.19.0"
         }
       },
       "OpenTelemetry.Api": {
         "type": "Transitive",
-        "resolved": "1.16.0",
-        "contentHash": "WZP8Eb6vZTeNqeV+fjBitc7iefBoTHIhaWorqg/h/YiQBlcQJu0bICuTqKV0XRyjiE0eWs80yLlnUtHAFSkFWA=="
+        "resolved": "1.19.0",
+        "contentHash": "ZupI0cvo9Jyk2IwLLMrXQm3PvX67tCBIiFws5fslm2Xw7gYctq5wZiGPS+mKmMususAAE9+jyv5Jp7ADxdZDJw=="
       },
       "OpenTelemetry.Api.ProviderBuilderExtensions": {
         "type": "Transitive",
-        "resolved": "1.16.0",
-        "contentHash": "hZwaHAkXvUNn9+cS+vEvYBgIrIQOQRz2cIRUODZ5gxHsDsLeNCueLgZFkybopjE0jUhLut6lm5eL3LTqbW0hMg==",
+        "resolved": "1.19.0",
+        "contentHash": "V+nYo7IIqH7cXagkERfGZUNstdoZQkplpn+hZMkLBlJ0ZJNQBvTMv2Cvjq8eqqxkB9lmBw+CUH78hWxJB1Vdcg==",
         "dependencies": {
-          "OpenTelemetry.Api": "1.16.0"
+          "OpenTelemetry.Api": "1.19.0"
         }
       },
       "Swashbuckle.AspNetCore.Swagger": {