diff --git a/artiq-fast/pkgs/python-deps.nix b/artiq-fast/pkgs/python-deps.nix
index f53440a..0248c9b 100644
--- a/artiq-fast/pkgs/python-deps.nix
+++ b/artiq-fast/pkgs/python-deps.nix
@@ -227,7 +227,7 @@ rec {
 
     postPatch = ''
       substituteInPlace requirements.txt \
-        --replace "jinja2==2.10.3" "jinja2"
+        --replace "jinja2==2.11.3" "jinja2"
       substituteInPlace requirements.txt \
         --replace "future==0.18.2" "future"
       substituteInPlace requirements.txt \