diff --git a/pkgs/development/python-modules/backports_functools_lru_cache/default.nix b/pkgs/development/python-modules/backports_functools_lru_cache/default.nix
index 0def8a2de2a..bcaa844720b 100644
--- a/pkgs/development/python-modules/backports_functools_lru_cache/default.nix
+++ b/pkgs/development/python-modules/backports_functools_lru_cache/default.nix
@@ -7,11 +7,11 @@
 
 if !(pythonOlder "3.3") then null else buildPythonPackage rec {
   pname = "backports.functools_lru_cache";
-  version = "1.4";
+  version = "1.5";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "31f235852f88edc1558d428d890663c49eb4514ffec9f3650e7f3c9e4a12e36f";
+    sha256 = "9d98697f088eb1b0fa451391f91afb5e3ebde16bbdb272819fd091151fda4f1a";
   };
 
   buildInputs = [ setuptools_scm ];