diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e4a2a9..1477e3a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## [0.5.1] - 2024-12-11
+
+### Fixed
+
+- Fix download definition T_RH_VOC_NOX_PM25 to only have 1 sample per download pack.
+  With 2 there was a buffer overflow leading to a crash when starting a data download 
+  for a gadget built with arduino-ble-gadget using T_RH_VOC_NOX_PM25 (e.g. SEN55 Example)
+  The fixed definition is supported by MyAmbience Version 3.5.0 onwards.
+
 ## [0.5.0] - 2024-09-09
 
 ### Added
diff --git a/library.properties b/library.properties
index 6db3c50..292f6b2 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Sensirion UPT Core
-version=0.5.0
+version=0.5.1
 author=Jonas Stolle, Maximilian Paulsen
 maintainer=Sensirion AG <sensirion.com>
 sentence=Library for definitions and configurations used by other Sensirion Unified Prototyping Toolkit (UPT) libraries.
diff --git a/src/BLEProtocol.cpp b/src/BLEProtocol.cpp
index e4bbe3a..3c87a04 100644
--- a/src/BLEProtocol.cpp
+++ b/src/BLEProtocol.cpp
@@ -194,7 +194,7 @@ std::map<DataType, SampleConfig> sampleConfigSelector = {
       .downloadType = 23,
       .sampleType = 24,
       .sampleSizeBytes = 10,
-      .sampleCountPerPacket = 2,
+      .sampleCountPerPacket = 1,
       .sensirionAdvertisementSampleType = 0,
       .sampleSlots = {{SignalType::TEMPERATURE_DEGREES_CELSIUS,
                        {.signalType = SignalType::TEMPERATURE_DEGREES_CELSIUS,