diff --git a/pkgs/development/libraries/openldap/default.nix b/pkgs/development/libraries/openldap/default.nix
index c9da441705c8..cfbbce2f5591 100644
--- a/pkgs/development/libraries/openldap/default.nix
+++ b/pkgs/development/libraries/openldap/default.nix
@@ -12,6 +12,7 @@ stdenv.mkDerivation rec {
 
   configureFlags =
     [ "--enable-overlays"
+      "--disable-dependency-tracking"   # speeds up one-time build
     ] ++ stdenv.lib.optional (openssl == null) "--without-tls"
       ++ stdenv.lib.optional (cyrus_sasl == null) "--without-cyrus-sasl";