diff --git a/base/requirements.txt b/base/requirements.txt
index 5171fe153ee43cf5b1addf8e03cfd1ed75c2d261..7190d3623be8a99e8991bcd7bd3d18a8b199bda4 100644
--- a/base/requirements.txt
+++ b/base/requirements.txt
@@ -21,7 +21,7 @@ tvb-ext-unicore==2.0.0
 tvb-widgets==1.6.0
 tvb-ext-xircuits==1.1.0
 vincent==0.4.4
-vtk
+vtk==9.2.6
 widgetsnbextension==3.5.2
 xlrd==2.0.1
 git+https://github.com/HumanBrainProject/clb-nb-utils.git