diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3523b6019..d69bfe4cf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -98,7 +98,7 @@ jobs:
       shell: bash -l {0}
       run: |
         # Additional dependencies only useful on Windows
-        mamba install -c conda-forge -c robotology esdcan freeglut
+        mamba install -c conda-forge -c robotology esdcan freeglut graphviz=2.50
 
     - name: Print used environment [Conda]
       shell: bash -l {0}
diff --git a/doc/conda-forge.md b/doc/conda-forge.md
index 6cc239c11..712825ceb 100644
--- a/doc/conda-forge.md
+++ b/doc/conda-forge.md
@@ -122,7 +122,7 @@ mamba install -c conda-forge bash-completion freeglut libdc1394 libi2c expat-cos
 
 If you are on **Windows**, you also need to install also the following packages:
 ~~~
-mamba install -c conda-forge freeglut
+mamba install -c conda-forge freeglut graphviz=2.50
 ~~~
 
 ### Clone the repo