[build] Upgrade pip version
@@ -160,6 +160,7 @@ ext-env-install: ext-eggs $(EXT_PY_ENV_INSTALL_TARGETS)
echo "--- Installing $$i into virtual environment" ; \
$(ENV_EASY_INSTALL) -Z -N $$i 2> /dev/null ; \
done
+ @$(ENV_PIP) install --upgrade pip
@$(ENV_PIP) install cryptography==3.3.2
$(EXT_PY_ENV_INSTALL_TARGETS):
