diff --git a/pkgs/applications/networking/lieer/default.nix b/pkgs/applications/networking/lieer/default.nix
index 51fc9c8e898c..fa0867b641b1 100644
--- a/pkgs/applications/networking/lieer/default.nix
+++ b/pkgs/applications/networking/lieer/default.nix
@@ -2,17 +2,17 @@
 
 python3Packages.buildPythonApplication rec {
   pname = "lieer";
-  version = "1.3";
+  version = "1.4";
 
   src = fetchFromGitHub {
     owner = "gauteh";
     repo = "lieer";
     rev = "v${version}";
-    sha256 = "12sl7d381l1gjaam419xc8gxmsprxf0hgksz1f974qmmijvr02bh";
+    sha256 = "sha256-2LujfvsxMHHmYjYOnLJaLdSlzDeej+ehUr4YfVe903U=";
   };
 
   propagatedBuildInputs = with python3Packages; [
-    notmuch
+    notmuch2
     oauth2client
     google-api-python-client
     tqdm