diff --git a/HACKING b/HACKING
index f2cf27e8c..8029fe6db 100644
--- a/HACKING
+++ b/HACKING
@@ -55,7 +55,7 @@ only for certain operations (like releases):
   pandoc    used during Debian packaging for the conversion of
             IPython notebooks to html
   svgo      for reducing SVG images before generating the tarball
-            (install with: npm install -g svgo)
+            (install with: npm install -g svgo@1.3.2)
   ltl2ba    used in the generated documentation and the test suite
   ltl2dstar likewise
   ltl3dra   likewise