diff --git a/dev-requirements.txt b/dev-requirements.txt
index 08415bed..87db70d2 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -92,7 +92,7 @@ opentelemetry-semantic-conventions==0.64b0
     #   opentelemetry-instrumentation-logging
     #   opentelemetry-instrumentation-system-metrics
     #   opentelemetry-sdk
-oteltest==0.24.0
+oteltest==0.48.0
     # via elastic-opentelemetry (pyproject.toml)
 packaging==26.2
     # via
diff --git a/pyproject.toml b/pyproject.toml
index 4c9aaf49..63113d09 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ dependencies = [
 dev = [
     "pytest",
     "pip-tools",
-    "oteltest==0.24.0",
+    "oteltest==0.48.0",
     "leb128",
     "pytest-vcr",
     "opentelemetry-instrumentation-logging",