diff --git a/pkgs/development/python-modules/backports_abc/default.nix b/pkgs/development/python-modules/backports_abc/default.nix
deleted file mode 100644
index 684626c0780f..000000000000
--- a/pkgs/development/python-modules/backports_abc/default.nix
+++ /dev/null
@@ -1,23 +0,0 @@
-{ lib
-, buildPythonPackage
-, fetchPypi
-, unittestCheckHook
-}:
-
-buildPythonPackage rec {
-  pname = "backports_abc";
-  version = "0.5";
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "033be54514a03e255df75c5aee8f9e672f663f93abb723444caec8fe43437bde";
-  };
-
-  checkInputs = [ unittestCheckHook ];
-
-  meta = {
-    homepage = "https://github.com/cython/backports_abc";
-    license = lib.licenses.psfl;
-    description = "A backport of recent additions to the 'collections.abc' module";
-  };
-}
diff --git a/pkgs/servers/calibre-web/default.nix b/pkgs/servers/calibre-web/default.nix
index 6047eae3c962..14c4822f3fb4 100644
--- a/pkgs/servers/calibre-web/default.nix
+++ b/pkgs/servers/calibre-web/default.nix
@@ -18,7 +18,6 @@ python3.pkgs.buildPythonApplication rec {
   propagatedBuildInputs = with python3.pkgs; [
     APScheduler
     advocate
-    backports_abc
     chardet
     flask-babel
     flask-login
@@ -54,6 +53,8 @@ python3.pkgs.buildPythonApplication rec {
     mv cps.py src/calibreweb/__init__.py
     mv cps src/calibreweb
 
+    sed -i "/backports_abc/d" setup.cfg
+
     substituteInPlace setup.cfg \
       --replace "cps = calibreweb:main" "calibre-web = calibreweb:main" \
       --replace "chardet>=3.0.0,<4.1.0" "chardet>=3.0.0,<6" \
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 643b99011b8c..c195b70de664 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1098,8 +1098,6 @@ self: super: with self; {
 
   backports-cached-property = callPackage ../development/python-modules/backports-cached-property { };
 
-  backports_abc = callPackage ../development/python-modules/backports_abc { };
-
   backports_csv = callPackage ../development/python-modules/backports_csv { };
 
   backports-datetime-fromisoformat = callPackage ../development/python-modules/backports-datetime-fromisoformat { };