diff --git a/pkgs/development/python-modules/libagent/default.nix b/pkgs/development/python-modules/libagent/default.nix
index 3bb8962e5a3a..43c1265eaab4 100644
--- a/pkgs/development/python-modules/libagent/default.nix
+++ b/pkgs/development/python-modules/libagent/default.nix
@@ -5,6 +5,7 @@
 , cryptography
 , ed25519
 , ecdsa
+, gnupg
 , semver
 , mnemonic
 , unidecode
@@ -30,6 +31,12 @@ buildPythonPackage rec {
     sha256 = "sha256-RISAy0efdatr9u4CWNRGnlffkC8ksw1NyRpJWKwqz+s=";
   };
 
+  # hardcode the path to gpgconf in the libagent library
+  postPatch = ''
+    substituteInPlace libagent/gpg/keyring.py \
+      --replace "util.which('gpgconf')" "'${gnupg}/bin/gpgconf'"
+  '';
+
   propagatedBuildInputs = [
     unidecode
     backports-shutil-which