diff --git a/Dockerfile b/Dockerfile
index e296c3eb..21b0f7c3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,7 @@ RUN apt-get -q update && apt-get -q -y install \
     libhyperscan-dev \
     liblua5.3-dev
 
-RUN cd /opt && curl -L -s https://dl.google.com/go/go1.11.2.linux-amd64.tar.gz | tar zx
+RUN cd /opt && curl -L -s https://dl.google.com/go/go1.11.4.linux-amd64.tar.gz | tar zx
 
 RUN mkdir -p ${NFF_GO}
 COPY . ${NFF_GO}
diff --git a/README.md b/README.md
index e1dae881..9ff950c5 100644
--- a/README.md
+++ b/README.md
@@ -75,22 +75,6 @@ sources use the following command
 
         git clone --recurse-submodules http://github.com/intel-go/nff-go
 
-### Working with a github fork
-
-If you are working on a fork, then the **go get** command will not put nff-go in
-$GOPATH/src/github.com/intel-go. However, imports will continue to reference
-github.com/intel-go. This is a feature of Go and not a problem in the way nff-go
-is written. See [stackoverflow
-article](https://stackoverflow.com/questions/14323872/using-forked-package-import-in-go)
-for a discussion. A simple way to resolve the problem is to use a symlink. If
-you are rscohn2 on github, and you forked nff-go into your personal account,
-then do this:
-
-        cd $GOPATH/src/github.com
-        mkdir intel-go
-        cd intel-go
-        ln -s ../rscohn2/nff-go .
-
 ## Setting up the build and run environment
 
 ### DPDK
@@ -115,13 +99,21 @@ $GOPATH/src/github.com/intel-go/nff-go/test/dpdk/dpdk-17.08/x86_64-native-linuxa
 
 ### Go
 
-Use Go version 1.11 or higher. To check the version of Go, do:
+Use Go version 1.11.4 or higher. To check the version of Go, do:
 
         go version
         
 ## Building NFF-GO
 
-        cd $GOPATH/src/github.com/intel-go/nff-go
+When Go compiler runs for the first time it downloads all dependent
+packages listed in `go.mod` file. This operation cannot be done in
+parallel because otherwise Go package cache gets corrupted. Because of
+that it is necessary to run command `go mod download` before first
+`make` is done. Another option is to use single process `make -j1`
+when it is run for the first time, but may be quite slow.
+
+        cd nff-go
+        go mod download        # do it once before first build
         make -j8
 
 ## Building NFF-GO in debug mode
@@ -183,11 +175,6 @@ in these JSON files.
 To clean all generated binaries, use the **make clean** command.  To delete all
 deployed images listed in NFF_GO_HOSTS, use the **make cleanall** command.
 
-## Changing the DPDK sources
-
-If you use the **make** command from NFF-GO directories, the DPDK driver is
-downloaded automatically.
-
 ## Contributing
 
 If you want to contribute to NFF-Go, check our [Contributing
diff --git a/go.sum b/go.sum
index 74997c9e..8848303e 100644
--- a/go.sum
+++ b/go.sum
@@ -1,6 +1,6 @@
 github.com/docker/distribution v2.6.2+incompatible h1:4FI6af79dfCS/CYb+RRtkSHw3q1L/bnDjG1PcPZtQhM=
 github.com/docker/distribution v2.6.2+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
-github.com/docker/docker v1.13.1 h1:5VBhsO6ckUxB0A8CE5LlUJdXzik9cbEbBTQ/ggeml7M=
+github.com/docker/docker v1.13.1 h1:IkZjBSIc8hBjLpqeAbeE5mca5mNgeatLHBy3GO78BWo=
 github.com/docker/docker v1.13.1/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
diff --git a/vagrant/Vagrantfile b/vagrant/Vagrantfile
index 6e9118d0..0d663149 100644
--- a/vagrant/Vagrantfile
+++ b/vagrant/Vagrantfile
@@ -125,7 +125,7 @@ echo Reassigning "${syscon}" interface to system name
 sudo nmcli c mod "${syscon}" connection.id 'System connection'
 
 echo Unpacking Go language into /opt
-(cd /opt; sudo sh -c 'curl -L -s https://dl.google.com/go/go1.11.2.linux-amd64.tar.gz | tar zx')
+(cd /opt; sudo sh -c 'curl -L -s https://dl.google.com/go/go1.11.4.linux-amd64.tar.gz | tar zx')
 mkdir go
 chmod +x ~/scripts.sh
 . ~/scripts.sh