diff --git a/mongo-tools.spec b/mongo-tools.spec
index 136bd54..825f3da 100644
--- a/mongo-tools.spec
+++ b/mongo-tools.spec
@@ -1,5 +1,5 @@
 Name:          mongo-tools
-Version:       4.0.0
+Version:       4.2.0
 Release:       1mamba
 Summary:       MongoDB Tools
 Group:         Applications/Databases
@@ -13,8 +13,12 @@ License:       Apache License 2.0
 BuildRequires: glibc-devel
 BuildRequires: libgcc
 BuildRequires: libgo-devel
+BuildRequires: libopenssl-devel
+BuildRequires: libpcap-devel
+BuildRequires: libsasl2-devel
 ## AUTOBUILDREQ-END
-BuildRequires: libgo-devel >= 8.1.0
+BuildRequires: libgo-devel >= 9.2.0
+BuildRequires: go-pie
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -29,24 +33,23 @@ The MongoDB Tools:
  - mongotop - Monitor read/write activity on a mongo server
 
 %prep
-%setup -q -n %{name}-r%{version}
+%setup -q -c -a0
+install -d build/src/github.com/mongodb/bin
+mv mongo-tools-r%{version} build/src/github.com/mongodb/mongo-tools
 
 %build
-mkdir -p src/github.com/mongodb
-ln -s ../../../ src/github.com/mongodb/mongo-tools
-export GOPATH=$(pwd):$(pwd)/vendor
-
-mkdir bin
+cd build/src/github.com/mongodb/mongo-tools
+export GOPATH=%{_builddir}/%{name}-%{version}/build
 
 for tool in `ls -d mongo*` bsondump; do
-   go build -o bin/$tool $tool/main/${tool}.go
- # go build -o bin/$tool -tags ssl $tool/main/${tool}.go
+  echo "Building ${tool}..."
+  GOROOT=%{_libdir}/go go build -o bin/${tool} -tags "ssl sasl" ${tool}/main/${tool}.go
 done
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 install -d -p %{buildroot}%{_bindir}
-install -p -m 0755 bin/* %{buildroot}%{_bindir}
+install -p -m 0755 build/src/github.com/mongodb/mongo-tools/bin/* %{buildroot}%{_bindir}
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -55,9 +58,12 @@ install -p -m 0755 bin/* %{buildroot}%{_bindir}
 %defattr(-,root,root)
 %{_bindir}/bsondump
 %{_bindir}/mongo*
-%doc LICENSE.md
+%doc build/src/github.com/mongodb/mongo-tools/LICENSE.md
 
 %changelog
+* Thu Aug 29 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 4.2.0-1mamba
+- update to 4.2.0
+
 * Mon Jun 25 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 4.0.0-1mamba
 - update to 4.0.0