diff --git a/pkgs/development/python-modules/pyftpdlib/default.nix b/pkgs/development/python-modules/pyftpdlib/default.nix
index 9fc654292ab..e7c5b922dc0 100644
--- a/pkgs/development/python-modules/pyftpdlib/default.nix
+++ b/pkgs/development/python-modules/pyftpdlib/default.nix
@@ -8,12 +8,12 @@
 }:
 
 buildPythonPackage rec {
-  version = "1.5.5";
+  version = "1.5.6";
   pname = "pyftpdlib";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1adf1c03d1508749e7c2f26dc9850ec0ef834318d725b7ae5ac91698f5c86752";
+    sha256 = "0pnv2byzmzg84q5nmmhn1xafvfil85qa5y52bj455br93zc5b9px";
   };
 
   checkInputs = [ mock psutil ];