diff --git a/bob/devtools/bootstrap.py b/bob/devtools/bootstrap.py
index 27c873799687d0a4f99ee4724a1dd026281ccd64..65a794144743f244da2fc2881539d9f274db3a58 100644
--- a/bob/devtools/bootstrap.py
+++ b/bob/devtools/bootstrap.py
@@ -546,6 +546,7 @@ if __name__ == "__main__":
                   "twine",  # required for checking readme of python (zip) distro
                   ])
         if conda_cmd == "install":
+            cmd.insert(2, "--update-specs")
             cmd.insert(2, "--update-deps")
         run_cmdline(cmd)