diff --git a/nixos/modules/services/backup/tarsnap.nix b/nixos/modules/services/backup/tarsnap.nix
index 78776786468b..24892a2a59a1 100644
--- a/nixos/modules/services/backup/tarsnap.nix
+++ b/nixos/modules/services/backup/tarsnap.nix
@@ -293,7 +293,7 @@ in
       # make sure that the tarsnap server is reachable after systemd starts up
       # the service - therefore we sleep in a loop until we can ping the
       # endpoint.
-      preStart = "while ! ping -q -c 1 betatest-server.tarsnap.com &> /dev/null; do sleep 3; done";
+      preStart = "while ! ping -q -c 1 v1-0-0-server.tarsnap.com &> /dev/null; do sleep 3; done";
       scriptArgs = "%i";
       script = ''
         mkdir -p -m 0755 ${dirOf cfg.cachedir}
diff --git a/pkgs/tools/backup/tarsnap/default.nix b/pkgs/tools/backup/tarsnap/default.nix
index f2ae4e83ad1a..95823bedad6f 100644
--- a/pkgs/tools/backup/tarsnap/default.nix
+++ b/pkgs/tools/backup/tarsnap/default.nix
@@ -8,11 +8,11 @@ let
 in
 stdenv.mkDerivation rec {
   name = "tarsnap-${version}";
-  version = "1.0.36.1";
+  version = "1.0.37";
 
   src = fetchurl {
     url = "https://www.tarsnap.com/download/tarsnap-autoconf-${version}.tgz";
-    sha256 = "1446l8g39bi5xxk4x1ijc1qjrj824729887gcffig0zrw80rx452";
+    sha256 = "1ynv323qi6775lzjb6hvifl8ajkv2bizy43sajadjfqvcl9r96gs";
   };
 
   preConfigure = ''