diff --git a/pkgs/tools/backup/s3ql/default.nix b/pkgs/tools/backup/s3ql/default.nix
index 66480a2f13a9..1bd8ebfd44b6 100644
--- a/pkgs/tools/backup/s3ql/default.nix
+++ b/pkgs/tools/backup/s3ql/default.nix
@@ -3,11 +3,11 @@
 python3Packages.buildPythonApplication rec {
   name = "${pname}-${version}";
   pname = "s3ql";
-  version = "2.21";
+  version = "2.26";
 
   src = fetchurl {
     url = "https://bitbucket.org/nikratio/${pname}/downloads/${name}.tar.bz2";
-    sha256 = "1mifmxbsxc2rcrydk2vs5cjfd5r0510q5y7rmavlzi8grpcqdf3d";
+    sha256 = "0xs1jbak51zwjrd6jmd96xl3a3jpw0p1s05f7sw5wipvvg0xnmfn";
   };
 
   buildInputs = [ which ]; # tests will fail without which