diff --git a/.travis.yml b/.travis.yml
index d61ca35..c01a389 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -33,11 +33,6 @@ before_install:
         - pip install git+https://github.com/antmicro/tuttest@prefix-lines-with#egg=tuttest
 
 install:
- - if [ "$OS" = "ubuntu" ]; then export INSTALL_COMMAND="apt update && apt install -y"; fi
- - if [ "$OS" = "centos" ]; then export INSTALL_COMMAND="yum -y install"; fi
- - if [ "$OS" = "ubuntu" ]; then export INSTALL_PACKAGES="wget"; fi
- - if [ "$OS" = "centos" ]; then export INSTALL_PACKAGES="wget"; fi
- - if [ "$OS" = "centos" ] && [ "$OS_VERSION" = "6" ]; then export INSTALL_PACKAGES="$INSTALL_PACKAGES util-linux-ng"; fi # Install missing `getopt` binary in centos 6
  - export DOCKER_NAME=test
  - export IN_DOCKER_EXEC="docker exec -t $DOCKER_NAME bash -c"
  - docker create
@@ -50,9 +45,9 @@ install:
         --tty
         $OS:$OS_VERSION
  - docker start $DOCKER_NAME
- - $IN_DOCKER_EXEC "$INSTALL_COMMAND $INSTALL_PACKAGES"
- - if [ "$OS_VERSION" = "6" ] || [ "$OS_VERSION" = "trusty" ]; then $IN_DOCKER_EXEC "echo 'readlink -f \$@' | tee -a /usr/bin/realpath;chmod +x /usr/bin/realpath"; fi # Replace missing `realpath` binary with readlink -f
- - tuttest README.rst unnamed0 --prefix-lines-with "$IN_DOCKER_EXEC" | bash -
+ - if [ "$OS" = "ubuntu" ]; then tuttest README.rst unnamed0 --prefix-lines-with "$IN_DOCKER_EXEC" | bash -; fi
+ - if [ "$OS" = "centos" ]; then tuttest README.rst unnamed1 --prefix-lines-with "$IN_DOCKER_EXEC" | bash -; fi
+ - tuttest README.rst unnamed2 --prefix-lines-with "$IN_DOCKER_EXEC" | bash -
  - if [ "$TOOLCHAIN" = "xilinx-series-7" ]; then tuttest xc7/README.rst unnamed0 --prefix-lines-with "$IN_DOCKER_EXEC" | bash -; fi
  - if [ "$TOOLCHAIN" = "quicklogic" ];      then tuttest eos-s3/README.rst unnamed0 --prefix-lines-with "$IN_DOCKER_EXEC" | bash -; fi
 
diff --git a/README.rst b/README.rst
index 6ebde32..107d875 100644
--- a/README.rst
+++ b/README.rst
@@ -22,7 +22,6 @@ The repository includes:
 
 * `.travis.yml <.travis.yml>`_ - Travis CI configuration file
 
-
 Clone this repository
 ---------------------
 
@@ -34,6 +33,22 @@ If you have not already done so, clone this repository and ``cd`` into it:
     git clone https://github.com/SymbiFlow/symbiflow-examples.git && cd symbiflow-examples
 
 
+Prerequisites
+-------------
+The only required prerequisite is ``wget``. You can install it using:
+
+* For Ubuntu:
+
+.. code:: bash
+
+   apt update && apt install -y wget
+
+* For CentOS:
+
+.. code:: bash
+
+   yum install -y wget
+
 Toolchain installation
 ----------------------
 
diff --git a/README.src.rst b/README.src.rst
index abbaf93..b0322f5 100644
--- a/README.src.rst
+++ b/README.src.rst
@@ -22,7 +22,6 @@ The repository includes:
 
 * `.travis.yml <.travis.yml>`_ - Travis CI configuration file
 
-
 Clone this repository
 ---------------------
 
@@ -34,6 +33,22 @@ If you have not already done so, clone this repository and ``cd`` into it:
     git clone https://github.com/SymbiFlow/symbiflow-examples.git && cd symbiflow-examples
 
 
+Prerequisites
+-------------
+The only required prerequisite is ``wget``. You can install it using:
+
+* For Ubuntu:
+
+.. code:: bash
+
+   apt update && apt install -y wget
+
+* For CentOS:
+
+.. code:: bash
+
+   yum install -y wget
+
 Toolchain installation
 ----------------------
 
diff --git a/eos-s3/environment.yml b/eos-s3/environment.yml
index 2f4802a..df1432d 100644
--- a/eos-s3/environment.yml
+++ b/eos-s3/environment.yml
@@ -12,6 +12,8 @@ dependencies:
   - intervaltree
   - git
   - pip
+  - coreutils
+  - util-linux
   # Packages installed from PyPI
   - pip:
     - -r file:requirements.txt