diff --git a/.gitignore b/.gitignore
index a19db17..7b94720 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ ocamlnet-2.2.9.tar.gz
 /ocamlnet-3.4.1.tar.gz
 /ocamlnet-3.5.1.tar.gz
 /ocamlnet-3.7.3.tar.gz
+/ocamlnet-3.7.4.tar.gz
diff --git a/ocaml-ocamlnet.spec b/ocaml-ocamlnet.spec
index a5845c4..6855435 100644
--- a/ocaml-ocamlnet.spec
+++ b/ocaml-ocamlnet.spec
@@ -10,8 +10,8 @@
 %global __strip /bin/true
 
 Name:           ocaml-ocamlnet
-Version:        3.7.3
-Release:        5%{?dist}
+Version:        3.7.4
+Release:        1%{?dist}
 Summary:        Network protocols for OCaml
 License:        BSD
 
@@ -74,7 +74,6 @@ In detail, the following features are available:
 
 %package        devel
 Summary:        Development files for %{name}
-Group:          Development/Libraries
 Requires:       %{name} = %{version}-%{release}
 
 
@@ -86,7 +85,6 @@ developing applications that use %{name}.
 %package        nethttpd
 Summary:        Ocamlnet HTTP daemon
 License:        GPLv2+
-Group:          Development/Libraries
 Requires:       %{name} = %{version}-%{release}
 
 
@@ -99,7 +97,6 @@ for serving web services.
 %package        nethttpd-devel
 Summary:        Development files for %{name}-nethttpd
 License:        GPLv2+
-Group:          Development/Libraries
 Requires:       %{name}-nethttpd = %{version}-%{release}
 
 
@@ -113,6 +110,9 @@ files for developing applications that use %{name}-nethttpd.
 
 
 %build
+# Parallel builds don't work:
+unset MAKEFLAGS
+
 ./configure -enable-tcl -with-nethttpd \
   -bindir %{_bindir} \
   -datadir %{_datadir}/%{name} \
@@ -185,7 +185,6 @@ echo -e '-b /usr/bin/netplex-admin\n-b /usr/bin/ocamlrpcgen' \
 
 
 %files devel
-%defattr(-,root,root,-)
 %doc ChangeLog RELNOTES
 %if %opt
 %{_libdir}/ocaml/*/*.a
@@ -197,7 +196,6 @@ echo -e '-b /usr/bin/netplex-admin\n-b /usr/bin/ocamlrpcgen' \
 
 
 %files nethttpd
-%defattr(-,root,root,-)
 %doc ChangeLog RELNOTES
 %{_libdir}/ocaml/nethttpd-for-netcgi2
 %{_libdir}/ocaml/nethttpd
@@ -209,7 +207,6 @@ echo -e '-b /usr/bin/netplex-admin\n-b /usr/bin/ocamlrpcgen' \
 
 
 %files nethttpd-devel
-%defattr(-,root,root,-)
 %doc ChangeLog RELNOTES
 %if %opt
 %{_libdir}/ocaml/*/*.a
@@ -219,6 +216,11 @@ echo -e '-b /usr/bin/netplex-admin\n-b /usr/bin/ocamlrpcgen' \
 
 
 %changelog
+* Wed Jul 23 2014 Richard W.M. Jones <rjones@redhat.com> - 3.7.4-1
+- New upstream version 3.7.4.
+- OCaml 4.02.0 beta rebuild.
+- Some spec file modernization.
+
 * Sat Jun 07 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 3.7.3-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
 
diff --git a/sources b/sources
index cd17d96..b1f9e7b 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-245c7a79474875d3fc7af54b6d963429  ocamlnet-3.7.3.tar.gz
+c13ed22c21d4faa2e94dea1e148093ac  ocamlnet-3.7.4.tar.gz