diff --git a/pkgs/development/python-modules/fakeredis/default.nix b/pkgs/development/python-modules/fakeredis/default.nix
index b39241bc9058..df8e34dafffe 100644
--- a/pkgs/development/python-modules/fakeredis/default.nix
+++ b/pkgs/development/python-modules/fakeredis/default.nix
@@ -6,19 +6,19 @@
 , lupa
 , poetry-core
 , pybloom-live
+, pyprobables
 , pytest-asyncio
 , pytest-mock
 , pytestCheckHook
 , pythonOlder
 , redis
-, six
 , sortedcontainers
 }:
 
 buildPythonPackage rec {
   pname = "fakeredis";
-  version = "2.20.1";
-  format = "pyproject";
+  version = "2.21.0";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";
 
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     owner = "dsoftwareinc";
     repo = "fakeredis-py";
     rev = "refs/tags/v${version}";
-    hash = "sha256-TmgHAskR5MF/lzF0NHgXKecLsSCoc7xsm7gRgupm0Ws=";
+    hash = "sha256-A+XOCWeXVt8SUkKM+TKra8xODuCD0QE9+/8FefUt4OY=";
   };
 
   nativeBuildInputs = [
@@ -35,7 +35,6 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     redis
-    six
     sortedcontainers
   ];
 
@@ -54,7 +53,13 @@ buildPythonPackage rec {
       aioredis
     ];
     bf = [
-      pybloom-live
+      pyprobables
+    ];
+    cf = [
+      pyprobables
+    ];
+    probabilistic = [
+      pyprobables
     ];
   };
 
@@ -66,7 +71,7 @@ buildPythonPackage rec {
     description = "Fake implementation of Redis API";
     homepage = "https://github.com/dsoftwareinc/fakeredis-py";
     changelog = "https://github.com/cunla/fakeredis-py/releases/tag/v${version}";
-    license = with licenses; [ mit ];
+    license = with licenses; [ bsd3 ];
     maintainers = with maintainers; [ fab ];
   };
 }
diff --git a/pkgs/development/python-modules/pyprobables/default.nix b/pkgs/development/python-modules/pyprobables/default.nix
new file mode 100644
index 000000000000..be4410cce276
--- /dev/null
+++ b/pkgs/development/python-modules/pyprobables/default.nix
@@ -0,0 +1,42 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytestCheckHook
+, pythonOlder
+, setuptools
+}:
+
+buildPythonPackage rec {
+  pname = "pyprobables";
+  version = "0.6.0";
+  pyproject = true;
+
+  disabled = pythonOlder "3.8";
+
+  src = fetchFromGitHub {
+    owner = "barrust";
+    repo = "pyprobables";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-maikrZlBzhv35zPXmKqdJzAz6eZDmluLUvkOkaPTCDU=";
+  };
+
+  nativeBuildInputs = [
+    setuptools
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "probables"
+  ];
+
+  meta = with lib; {
+    description = "Probabilistic data structures";
+    homepage = "https://github.com/barrust/pyprobables";
+    changelog = "https://github.com/barrust/pyprobables/blob/${version}/CHANGELOG.md";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 96c6b16a3f59..cf5e720a1215 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9341,6 +9341,8 @@ self: super: with self; {
 
   pyprecice = callPackage ../development/python-modules/pyprecice { };
 
+  pyprobables = callPackage ../development/python-modules/pyprobables { };
+
   pyproject-api = callPackage ../development/python-modules/pyproject-api { };
 
   pyproject-hooks = callPackage ../development/python-modules/pyproject-hooks { };