diff --git a/dependencyManagement/build.gradle.kts b/dependencyManagement/build.gradle.kts
index 0b046f51db1..e128fc96ad2 100644
--- a/dependencyManagement/build.gradle.kts
+++ b/dependencyManagement/build.gradle.kts
@@ -15,7 +15,7 @@ val jmhVersion = "1.37"
 val mockitoVersion = "4.11.0"
 val slf4jVersion = "2.0.17"
 val opencensusVersion = "0.31.1"
-val prometheusServerVersion = "1.3.10"
+val prometheusServerVersion = "1.4.1"
 val armeriaVersion = "1.33.2"
 val junitVersion = "5.13.4"
 val okhttpVersion = "5.1.0"
diff --git a/exporters/prometheus/src/test/java/io/opentelemetry/exporter/prometheus/Otel2PrometheusConverterTest.java b/exporters/prometheus/src/test/java/io/opentelemetry/exporter/prometheus/Otel2PrometheusConverterTest.java
index 4e718c78629..d463d2f5664 100644
--- a/exporters/prometheus/src/test/java/io/opentelemetry/exporter/prometheus/Otel2PrometheusConverterTest.java
+++ b/exporters/prometheus/src/test/java/io/opentelemetry/exporter/prometheus/Otel2PrometheusConverterTest.java
@@ -141,9 +141,9 @@ private static Stream<Arguments> metricMetadataArgs() {
         // unsupported characters are translated to "_", repeated "_" are dropped
         Arguments.of(
             createSampleMetricData("s%%ple", "%/min", MetricDataType.SUMMARY),
-            "s_ple_percent_per_minute summary",
-            "s_ple_percent_per_minute description",
-            "s_ple_percent_per_minute_count"),
+            "s__ple_percent_per_minute summary",
+            "s__ple_percent_per_minute description",
+            "s__ple_percent_per_minute_count"),
         // metric unit is not appended if the name already contains the unit
         Arguments.of(
             createSampleMetricData("metric_name_total", "total", MetricDataType.LONG_SUM),
@@ -186,9 +186,9 @@ private static Stream<Arguments> metricMetadataArgs() {
         // metric name cannot start with a number
         Arguments.of(
             createSampleMetricData("2_metric_name", "By", MetricDataType.SUMMARY),
-            "_metric_name_bytes summary",
-            "_metric_name_bytes description",
-            "_metric_name_bytes_count"));
+            "__metric_name_bytes summary",
+            "__metric_name_bytes description",
+            "__metric_name_bytes_count"));
   }
 
   @ParameterizedTest
diff --git a/exporters/prometheus/src/test/java/io/opentelemetry/exporter/prometheus/PrometheusHttpServerTest.java b/exporters/prometheus/src/test/java/io/opentelemetry/exporter/prometheus/PrometheusHttpServerTest.java
index 2b1f27b8a3e..0ff651133fc 100644
--- a/exporters/prometheus/src/test/java/io/opentelemetry/exporter/prometheus/PrometheusHttpServerTest.java
+++ b/exporters/prometheus/src/test/java/io/opentelemetry/exporter/prometheus/PrometheusHttpServerTest.java
@@ -46,7 +46,7 @@
 import io.opentelemetry.sdk.resources.Resource;
 import io.prometheus.metrics.exporter.httpserver.HTTPServer;
 import io.prometheus.metrics.exporter.httpserver.MetricsHandler;
-import io.prometheus.metrics.expositionformats.generated.com_google_protobuf_4_31_1.Metrics;
+import io.prometheus.metrics.expositionformats.generated.com_google_protobuf_4_32_0.Metrics;
 import io.prometheus.metrics.model.registry.PrometheusRegistry;
 import java.io.ByteArrayInputStream;
 import java.io.IOException;