diff --git a/nixos/modules/security/acme.nix b/nixos/modules/security/acme.nix
index 3734a06c3fa4..69f5a4e4cae9 100644
--- a/nixos/modules/security/acme.nix
+++ b/nixos/modules/security/acme.nix
@@ -104,7 +104,12 @@ let
     mkHash = with builtins; val: substring 0 20 (hashString "sha256" val);
     certDir = mkHash hashData;
     domainHash = mkHash "${concatStringsSep " " extraDomains} ${data.domain}";
-    othersHash = mkHash "${toString acmeServer} ${data.keyType}";
+    othersHash = mkHash (
+      "${toString acmeServer} ${data.keyType}"
+      + (
+        optionalString (versionOlder "20.09" config.system.stateVersion) data.email
+      )
+    );
     accountDir = "/var/lib/acme/.lego/accounts/" + othersHash;
 
     protocolOpts = if useDns then (