diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8b70743..4291f7f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -66,4 +66,4 @@ std-uritemplate==0.0.46
 
 opentelemetry-api==1.20.0
 
-opentelemetry-sdk==1.20.0
+opentelemetry-sdk==1.21.0