diff --git a/requirements-dev.txt b/requirements-dev.txt
index f055682..31a543b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
 pytest==9.1.1
 ruff==0.16.8
-av==18.1.0
+av==19.0.0
 numpy==2.5.3
diff --git a/requirements.txt b/requirements.txt
index 38c8d5d..cd98361 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 #   docker build -t x . && docker run --rm --entrypoint pip x freeze | sort
 # The output must match this file exactly.
 anyio==4.15.1
-av==18.1.0
+av==19.0.0
 certifi==2026.7.22
 click==8.5.0
 ctranslate2==4.8.1