diff --git a/.travis.yml b/.travis.yml
index 317bb8d18bfe99bad4a093bfce62a3648f068520..8510ce2920148837df448be8c5f08bbf806233be 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,7 @@ matrix:
     - os: osx
 
 env:
-- PYENV_PYTHON_VERSION=3.5.3
+- PYENV_PYTHON_VERSION=3.5.4
 
 before_install:
 - ci/travis/before_install.sh
diff --git a/doc/install_for_developers.md b/doc/install_for_developers.md
index e740ae3b4b5c694422e07d91f057c0c705df165b..615eb83729de0defae2e01bd4b2f7a444e20518e 100644
--- a/doc/install_for_developers.md
+++ b/doc/install_for_developers.md
@@ -94,9 +94,9 @@ If you are running El Capitan (MacOS 10.10), you'll need to run `xcode-select --
 
 #### Pyenv environment 
 
-##### Build python 3.5.3
+##### Build python 3.5.4
 
-Building python 3.5.3 requires libraries of `openssl` and `sqlite3`. On Ubuntu, install it using the following commands : 
+Building python 3.5.4 requires libraries of `openssl` and `sqlite3`. On Ubuntu, install it using the following commands : 
 
 ```
 apt-get update
@@ -106,12 +106,12 @@ apt-get install libsqlite3-dev
 
 Restart your shell then prepare your virtualenv: 
 
-On GNU/Linux: `PYTHON_CONFIGURE_OPTS="--enable-shared" pyenv install 3.5.3`  
-On MacOS: `env PYTHON_CONFIGURE_OPTS="--enable-framework" pyenv install 3.5.3`
+On GNU/Linux: `PYTHON_CONFIGURE_OPTS="--enable-shared" pyenv install 3.5.4`  
+On MacOS: `env PYTHON_CONFIGURE_OPTS="--enable-framework" pyenv install 3.5.4`
 
 Run:
 ```bash
-pyenv shell 3.5.3
+pyenv shell 3.5.4
 pyenv virtualenv sakia-env
 ```