diff --git a/pkgs/development/python-modules/imap-tools/default.nix b/pkgs/development/python-modules/imap-tools/default.nix
index bc4b2ae8e79a..a7a0736d60db 100644
--- a/pkgs/development/python-modules/imap-tools/default.nix
+++ b/pkgs/development/python-modules/imap-tools/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage rec {
   pname = "imap-tools";
-  version = "1.9.0";
+  version = "1.9.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "ikvk";
     repo = "imap_tools";
     tag = "v${version}";
-    hash = "sha256-2frJqHKIOuERC8G6fJwJOdxcWHRQRRy1BxfZDrVhXEU=";
+    hash = "sha256-tlShiI90PAbWztrL5PgmE1D+/h6bUoSxAHxwGlQHvus=";
   };
 
   build-system = [ setuptools ];