diff --git a/global-requirements.txt b/global-requirements.txt
index b104374aaf..8e13cd64ac 100644
--- a/global-requirements.txt
+++ b/global-requirements.txt
@@ -107,7 +107,9 @@ prometheus-client  # Apache-2.0
 protobuf  # BSD License (3 clause)
 psutil  # BSD
 pyasn1!=0.2.3  # BSD
+pyasn1-lextudio  # BSD
 pyasn1-modules  # BSD
+pyasn1-modules-lextudio  # BSD
 pycadf!=2.0.0  # Apache-2.0
 pycdlib  # LGPLv2+
 PyECLib  # BSD
@@ -496,6 +498,8 @@ jsonpath-rw-ext  # Apache-2.0
 oauth2client!=4.0.0  # Apache-2.0
 # pysnmp library is not maintained since 4 years, it is
 # not recommended to use it, use its fork pysnmp-lextudio instead
+# in conjunction with its dependencies pyasn1-lextudio and
+# pyasn1-modules-lextudio
 pysnmp  # BSD
 simplejson  # MIT
 six  # MIT
diff --git a/upper-constraints.txt b/upper-constraints.txt
index b88e375561..90b961d85b 100644
--- a/upper-constraints.txt
+++ b/upper-constraints.txt
@@ -161,6 +161,7 @@ virtualbmc===3.1.0
 SQLAlchemy===2.0.30
 pyroute2===0.7.12
 google-auth===2.29.0
+pyasn1-lextudio===1.1.2
 kazoo===2.10.0
 pyspnego===0.10.2
 XStatic-roboto-fontface===0.5.0.0
@@ -397,9 +398,10 @@ pysaml2===7.3.1;python_version=='3.8'
 pysaml2===7.5.0;python_version>='3.9'
 requests-oauthlib===1.3.1
 oslo.reports===3.3.0
-pysnmp-lextudio===6.1.2
+pysnmp-lextudio===5.0.33
 bitmath===1.3.3.1
 ceilometermiddleware===3.4.0
+pyasn1-modules-lextudio===0.2.9
 testrepository===0.0.21
 sympy===1.12
 Logbook===1.7.0.post0