diff --git a/api/envoy/extensions/tracers/opentelemetry/samplers/v3/dynatrace_sampler.proto b/api/envoy/extensions/tracers/opentelemetry/samplers/v3/dynatrace_sampler.proto
index 848c4a942416e..e8c4f3238aa6f 100644
--- a/api/envoy/extensions/tracers/opentelemetry/samplers/v3/dynatrace_sampler.proto
+++ b/api/envoy/extensions/tracers/opentelemetry/samplers/v3/dynatrace_sampler.proto
@@ -24,7 +24,7 @@ message DynatraceSamplerConfig {
   string tenant = 1;
 
   // The id of the Dynatrace cluster which the spans are reported to.
-  string cluster_id = 2;
+  int32 cluster_id = 2;
 
   // The HTTP URI to fetch the sampler configuration (root spans per minute). For example:
   //
diff --git a/source/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler.cc b/source/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler.cc
index 0fa29c4f12e3c..783a07f6c55ab 100644
--- a/source/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler.cc
+++ b/source/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler.cc
@@ -99,7 +99,7 @@ DynatraceSampler::DynatraceSampler(
     Server::Configuration::TracerFactoryContext& context,
     SamplerConfigFetcherPtr sampler_config_fetcher)
     : dt_tracestate_key_(absl::StrCat(calculateTenantId(config.tenant()), "-",
-                                      absl::string_view(config.cluster_id()), "@dt")),
+                                      absl::Hex(config.cluster_id()), "@dt")),
       sampling_controller_(std::move(sampler_config_fetcher)) {
 
   timer_ = context.serverFactoryContext().mainThreadDispatcher().createTimer([this]() -> void {
diff --git a/test/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler_integration_test.cc b/test/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler_integration_test.cc
index 73bd31e7360b8..512225909c2d3 100644
--- a/test/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler_integration_test.cc
+++ b/test/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler_integration_test.cc
@@ -38,7 +38,7 @@ class DynatraceSamplerIntegrationTest : public Envoy::HttpIntegrationTest,
         typed_config:
           "@type": type.googleapis.com/envoy.extensions.tracers.opentelemetry.samplers.v3.DynatraceSamplerConfig
           tenant: "abc12345"
-          cluster_id: "980df25c"
+          cluster_id: -1743916452
   )EOF";
 
     auto tracing_config =
diff --git a/test/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler_test.cc b/test/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler_test.cc
index beac4a0bbe626..9a965ac2bbd73 100644
--- a/test/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler_test.cc
+++ b/test/extensions/tracers/opentelemetry/samplers/dynatrace/dynatrace_sampler_test.cc
@@ -43,7 +43,7 @@ class DynatraceSamplerTest : public testing::Test {
 
   const std::string yaml_string_ = R"EOF(
           tenant: "abc12345"
-          cluster_id: "980df25c"
+          cluster_id: -1743916452
   )EOF";
 
 public:
diff --git a/test/extensions/tracers/opentelemetry/samplers/dynatrace/sampler_config_fetcher_test.cc b/test/extensions/tracers/opentelemetry/samplers/dynatrace/sampler_config_fetcher_test.cc
index 09dd935f14e8e..cd527a2590782 100644
--- a/test/extensions/tracers/opentelemetry/samplers/dynatrace/sampler_config_fetcher_test.cc
+++ b/test/extensions/tracers/opentelemetry/samplers/dynatrace/sampler_config_fetcher_test.cc
@@ -31,7 +31,7 @@ class SamplerConfigFetcherTest : public testing::Test {
 
     const std::string yaml_string = R"EOF(
           tenant: "abc12345"
-          cluster_id: "980df25c"
+          cluster_id: -1743916452
           token: "tokenval"
           http_uri:
             cluster: "cluster_name"