diff --git a/baselibs.conf b/baselibs.conf
index c81c188..60c0e17 100644
--- a/baselibs.conf
+++ b/baselibs.conf
@@ -1,3 +1,3 @@
-libprotobuf13
-libprotoc13
-libprotobuf-lite13
+libprotobuf15
+libprotoc15
+libprotobuf-lite15
diff --git a/protobuf-3.3.0.tar.gz b/protobuf-3.3.0.tar.gz
deleted file mode 100644
index 8092727..0000000
--- a/protobuf-3.3.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:94c414775f275d876e5e0e4a276527d155ab2d0da45eed6b7734301c330be36e
-size 4336596
diff --git a/protobuf-3.5.0.tar.gz b/protobuf-3.5.0.tar.gz
new file mode 100644
index 0000000..e4adad6
--- /dev/null
+++ b/protobuf-3.5.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0cc6607e2daa675101e9b7398a436f09167dffb8ca0489b0307ff7260498c13c
+size 4565088
diff --git a/protobuf.changes b/protobuf.changes
index f31efe2..9011494 100644
--- a/protobuf.changes
+++ b/protobuf.changes
@@ -1,3 +1,20 @@
+-------------------------------------------------------------------
+Mon Dec 11 23:42:45 UTC 2017 - jengelh@inai.de
+
+- Update to new upstream release 3.5.0
+  * Proto3 messages are now preserving unknown fields by default.
+    If you rely on unknowns fields being dropped, use
+    DiscardUnknownFields() explicitly.
+  * Deprecated the unsafe_arena_release_* and
+    unsafe_arena_add_allocated_* methods for string fields.
+  * Added move constructor and move assignment to RepeatedField,
+    RepeatedPtrField and google::protobuf::Any.
+  * Added perfect forwarding in Arena::CreateMessage.
+  * In-progress experimental support for implicit weak fields
+    with lite protos. This feature allows the linker to strip out
+    more unused messages and reduce binary size.
+- Rename %soname to %sover to better reflect its use.
+
 -------------------------------------------------------------------
 Fri Jun 16 07:57:00 UTC 2017 - mpluskal@suse.com
 
diff --git a/protobuf.spec b/protobuf.spec
index dad5434..b098cfe 100644
--- a/protobuf.spec
+++ b/protobuf.spec
@@ -16,7 +16,7 @@
 #
 
 
-%define soname 13
+%define sover 15
 %define tarname protobuf
 # requires gmock, which is not yet in the distribution
 %bcond_with check
@@ -34,7 +34,7 @@
 %endif
 
 Name:           protobuf
-Version:        3.3.0
+Version:        3.5.0
 Release:        0
 Summary:        Protocol Buffers - Google's data interchange format
 License:        BSD-3-Clause
@@ -49,7 +49,7 @@ BuildRequires:  automake
 BuildRequires:  fdupes
 BuildRequires:  gcc-c++
 %if %{with check}
-BuildRequires:  libgmock-devel
+BuildRequires:  libgmock-devel >= 1.7.0
 %endif
 BuildRequires:  libtool
 BuildRequires:  pkg-config
@@ -77,29 +77,29 @@ Protocol Buffers are a way of encoding structured data in an efficient yet
 extensible format. Google uses Protocol Buffers for almost all of its internal
 RPC protocols and file formats.
 
-%package -n libprotobuf%{soname}
+%package -n libprotobuf%{sover}
 Summary:        Protocol Buffers - Google's data interchange format
 Group:          System/Libraries
 
-%description -n libprotobuf%{soname}
+%description -n libprotobuf%{sover}
 Protocol Buffers are a way of encoding structured data in an efficient yet
 extensible format. Google uses Protocol Buffers for almost all of its internal
 RPC protocols and file formats.
 
-%package -n libprotoc%{soname}
+%package -n libprotoc%{sover}
 Summary:        Protocol Buffers - Google's data interchange format
 Group:          System/Libraries
 
-%description -n libprotoc%{soname}
+%description -n libprotoc%{sover}
 Protocol Buffers are a way of encoding structured data in an efficient yet
 extensible format. Google uses Protocol Buffers for almost all of its internal
 RPC protocols and file formats.
 
-%package -n libprotobuf-lite%{soname}
+%package -n libprotobuf-lite%{sover}
 Summary:        Protocol Buffers - Google's data interchange format
 Group:          System/Libraries
 
-%description -n libprotobuf-lite%{soname}
+%description -n libprotobuf-lite%{sover}
 Protocol Buffers are a way of encoding structured data in an efficient yet
 extensible format. Google uses Protocol Buffers for almost all of its internal
 RPC protocols and file formats.
@@ -108,8 +108,8 @@ RPC protocols and file formats.
 Summary:        Header files, libraries and development documentation for %{name}
 Group:          Development/Libraries/C and C++
 Requires:       gcc-c++
-Requires:       libprotobuf%{soname} = %{version}
-Requires:       libprotobuf-lite%{soname}
+Requires:       libprotobuf%{sover} = %{version}
+Requires:       libprotobuf-lite%{sover}
 Requires:       zlib-devel
 Provides:       libprotobuf-devel = %{version}
 Conflicts:      protobuf2-devel
@@ -175,7 +175,7 @@ sed -i '/google_test_dir/d' python/setup.py
 export PTHREAD_LIBS=-lpthread
 %endif
 
-./autogen.sh
+autoreconf -fi
 %configure \
 	--disable-static
 
@@ -252,30 +252,30 @@ popd
 %endif
 %endif
 
-%post -n libprotobuf%{soname} -p /sbin/ldconfig
+%post -n libprotobuf%{sover} -p /sbin/ldconfig
 
-%postun -n libprotobuf%{soname} -p /sbin/ldconfig
+%postun -n libprotobuf%{sover} -p /sbin/ldconfig
 
-%post -n libprotoc%{soname} -p /sbin/ldconfig
+%post -n libprotoc%{sover} -p /sbin/ldconfig
 
-%postun -n libprotoc%{soname} -p /sbin/ldconfig
+%postun -n libprotoc%{sover} -p /sbin/ldconfig
 
-%post -n libprotobuf-lite%{soname} -p /sbin/ldconfig
+%post -n libprotobuf-lite%{sover} -p /sbin/ldconfig
 
-%postun -n libprotobuf-lite%{soname} -p /sbin/ldconfig
+%postun -n libprotobuf-lite%{sover} -p /sbin/ldconfig
 
-%files -n libprotobuf%{soname}
+%files -n libprotobuf%{sover}
 %defattr(-, root, root)
 %doc LICENSE
-%{_libdir}/libprotobuf.so.%{soname}*
+%{_libdir}/libprotobuf.so.%{sover}*
 
-%files -n libprotoc%{soname}
+%files -n libprotoc%{sover}
 %defattr(-, root, root)
-%{_libdir}/libprotoc.so.%{soname}*
+%{_libdir}/libprotoc.so.%{sover}*
 
-%files -n libprotobuf-lite%{soname}
+%files -n libprotobuf-lite%{sover}
 %defattr(-, root, root)
-%{_libdir}/libprotobuf-lite.so.%{soname}*
+%{_libdir}/libprotobuf-lite.so.%{sover}*
 
 %files devel
 %defattr(-,root,root)