diff --git a/nixos/tests/pleroma.nix b/nixos/tests/pleroma.nix
index 797cac44f956..aacd9e01eb17 100644
--- a/nixos/tests/pleroma.nix
+++ b/nixos/tests/pleroma.nix
@@ -163,7 +163,7 @@ import ./make-test-python.nix ({ pkgs, ... }:
   '';
 
   tls-cert = pkgs.runCommandNoCC "selfSignedCerts" { buildInputs = [ pkgs.openssl ]; } ''
-    openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -nodes -subj '/CN=pleroma.nixos.test'
+    openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -nodes -subj '/CN=pleroma.nixos.test' -days 36500
     mkdir -p $out
     cp key.pem cert.pem $out
   '';