diff --git a/lower-constraints.txt b/lower-constraints.txt
index ea3909959f65..35abd1eaff01 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -21,7 +21,7 @@ decorator==4.1.0
 deprecation==2.0
 dogpile.cache==0.6.5
 enum-compat==0.0.2
-eventlet==0.22.0
+eventlet==0.26.1
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0
diff --git a/releasenotes/notes/dnspython-2.0.0-not-supported-by-eventlet-b8adf73ed9e14817.yaml b/releasenotes/notes/dnspython-2.0.0-not-supported-by-eventlet-b8adf73ed9e14817.yaml
new file mode 100644
index 000000000000..9cb77a6640c3
--- /dev/null
+++ b/releasenotes/notes/dnspython-2.0.0-not-supported-by-eventlet-b8adf73ed9e14817.yaml
@@ -0,0 +1,9 @@
+---
+issues:
+  - |
+    The dnspython 2.0.0 package is incompatible with even the latest eventlet
+    package version. This makes nova-novncproxy service to fail if the version
+    of the dnspython package is equal or greater than 2.0.0. See `eventlet
+    issue 619`_ for more details
+
+    .. _eventlet issue 619: https://github.com/eventlet/eventlet/issues/619
diff --git a/requirements.txt b/requirements.txt
index ccf10aa7b9a2..a644bc7b9291 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 SQLAlchemy>=1.2.19 # MIT
 decorator>=4.1.0 # BSD
-eventlet>=0.22.0 # MIT
+eventlet>=0.26.1 # MIT
 Jinja2>=2.10 # BSD License (3 clause)
 keystonemiddleware>=4.20.0 # Apache-2.0
 lxml>=4.5.0 # BSD