diff --git a/pyproject.toml b/pyproject.toml
index 0f1dd77..3185465 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,8 @@ dev = [
     "mysql-connector",
     "pre-commit",
     "pymssql",
-    "pysnmplib",
+    "pyasn1==0.4.8",
+    "pysnmplib==5.0.21",
     "pytest",
     "pytest-xdist==3.5.0",
     "redis",