diff --git a/protobuf-c-1.3.3.tar.gz b/protobuf-c-1.3.3.tar.gz
deleted file mode 100644
index 1dccf80..0000000
--- a/protobuf-c-1.3.3.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:22956606ef50c60de1fabc13a78fbc50830a0447d780467d3c519f84ad527e78
-size 500505
diff --git a/protobuf-c-1.4.0.tar.gz b/protobuf-c-1.4.0.tar.gz
new file mode 100644
index 0000000..deefc94
--- /dev/null
+++ b/protobuf-c-1.4.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:26d98ee9bf18a6eba0d3f855ddec31dbe857667d269bc0b6017335572f85bbcb
+size 505251
diff --git a/protobuf-c.changes b/protobuf-c.changes
index 2428b76..285fc0c 100644
--- a/protobuf-c.changes
+++ b/protobuf-c.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Wed May 19 07:24:48 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 1.4.0
+  * protoc-c: Add custom options support
+  * Fix packed repeated bool parsing
+
 -------------------------------------------------------------------
 Thu Apr  2 16:46:23 UTC 2020 - Adam Majer <adam.majer@suse.de>
 
diff --git a/protobuf-c.spec b/protobuf-c.spec
index 4cd8c11..c30c614 100644
--- a/protobuf-c.spec
+++ b/protobuf-c.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package protobuf-c
 #
-# Copyright (c) 2020 SUSE LLC
+# Copyright (c) 2021 SUSE LLC
 # Copyright (c) 2011 Pascal Bleser
 #
 # All modifications and additions to the file contributed by third parties
@@ -19,7 +19,7 @@
 
 %define sover 1
 Name:           protobuf-c
-Version:        1.3.3
+Version:        1.4.0
 Release:        0
 Summary:        C bindings for Google's Protocol Buffers
 License:        BSD-3-Clause
@@ -67,7 +67,7 @@ Buffers from pure C (not C++).
 %define _lto_cflags %nil
 autoreconf -fvi
 %configure
-make %{?_smp_mflags}
+%make_build
 
 %install
 %make_install