diff --git a/libecpg.spec b/libecpg.spec
index 8b9cfdb..a206362 100644
--- a/libecpg.spec
+++ b/libecpg.spec
@@ -2,7 +2,7 @@
 
 Summary: ECPG - Embedded SQL in C
 Name: libecpg
-Version: %majorversion.3
+Version: %majorversion.4
 Release: 1%{?dist}
 
 License: PostgreSQL
@@ -81,7 +81,7 @@ find . -type f -name .gitignore | xargs rm
     --without-readline \
     --datadir=%_datadir/pgsql
 
-%make_build -C "src/interfaces/ecpg"
+%make_build -C "src/interfaces/ecpg" -j1
 
 
 %install
@@ -132,6 +132,11 @@ find_lang_bins %name-devel.lst  ecpg
 
 
 %changelog
+* Thu Aug 29 2024 Ales Nezbeda <anezbeda@redhat.com> - 16.4-1
+- Update to 16.4
+- Fix compilation sometimes failing due to race condition in makefile
+- Resolves: BZ:2290330
+
 * Mon May 27 2024 Ales Nezbeda <anezbeda@redhat.com> - 16.3-1
 - Update to 16.3
 
diff --git a/sources b/sources
index 4f151c0..04b03aa 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (postgresql-16.3.tar.bz2) = dc1c8d4fbc8e53e9be91dcf1b644b3969bd634f11bf5a1c4fe16619fd386f3349a5509788d43e6a57d099ad75233026d4dd4e0bb180ffc747fd3c1a575c51a5f
-SHA512 (postgresql-16.3.tar.bz2.sha256) = eeebced14bc6c42df864c00397caaafa91b3ddc1c3900943989f04d396674907f63051b93aeb6b1b2408ffeb1b2fc44521b123b42b986b45c19bdcf706523c84
+SHA512 (postgresql-16.4.tar.bz2) = f2070299f0857a270317ac984f8393374cf00d4f32a082fe3c5481e36c560595ea711fed95e40d1bc90c5089edf8f165649d443d8b9c68614e1c83fc91268e96
+SHA512 (postgresql-16.4.tar.bz2.sha256) = f5a33591b4a0810e2f90d21df471ba086acbd1f97099e38aed46e4d3b45ee72037ef5958c7f155dd9fb7969152599fb6946b792a12d92575bfbc595049b74674