diff --git a/dependencies.rst b/dependencies.rst
index 38d0cc9bc..3ded2eaaa 100644
--- a/dependencies.rst
+++ b/dependencies.rst
@@ -3,21 +3,48 @@ Dependency management
 
 .. questions::
 
-   - Q1
-   - Q2
+   - How can my collaborators get the same results?
+   - How can my collaborators easily install my codes with all the necessary dependencies?
+   - How can make it easy for my colleagues to reproduce my results?
 
 .. objectives::
 
-   - O1
-   - O2
+   - Record dependencies
+   - Simplify usage of my codes
 
 
 
-(lesson here)
+Installing Packages for your project
+-------------------------------------
 
+The idea is to start thinking about identifying the list of packages for a given project.
 
+--> Create an environment
+
+- virtualenv 
+- pipenv
+- conda 
+
+
+Dependencies
+------------
+
+https://coderefinery.github.io/reproducible-research/03-dependencies/#dependencies
+
+.. challenge:: dependencies 1
+
+  Maybe reuse example from preceding episode and ask learners to make the list of dependencies. Does everyone has the exact same version for each package?
+  Create a requirements.txt for this project.
+
+  Could be nice to have an example that requires a version > Y for a package (such ad matplotlib (3D plotting?).
+
+
+Other Tools for Application Dependency Management
+-------------------------------------------------
+
+- poetry
+- micropipenv
 
 .. keypoints::
 
-   - K1
-   - K2
+   - Conda, pip, Virtualenv, Pipenv, pyenv, Poetry, requirements.txt