diff --git a/local-oldest-requirements.txt b/local-oldest-requirements.txt
index 73ea204..693c47d 100644
--- a/local-oldest-requirements.txt
+++ b/local-oldest-requirements.txt
@@ -1,4 +1,4 @@
 # Remember to update setup.py to match the package versions below.
 acme[dev]==0.31.0
 certbot[dev]==0.34.0
-dns-lexicon==3.9.5
+dns-lexicon==3.11.1
diff --git a/requirements.txt b/requirements.txt
index 8c2902a..efa7a2c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 acme==1.23.0
 certbot==1.27.0
-dns-lexicon==3.9.5
+dns-lexicon==3.11.1