diff --git a/Makefile b/Makefile
index 332549541..b20d57606 100644
--- a/Makefile
+++ b/Makefile
@@ -69,7 +69,7 @@ gettext:
 $(HTML_BUILD_DIR)/_static/style.css: extensions/odoo_theme/static/style.scss extensions/odoo_theme/static/scss/*.scss
 	@echo "Compiling stylesheets..."
 	mkdir -p $(HTML_BUILD_DIR)/_static
-	pysassc extensions/odoo_theme/static/style.scss $(HTML_BUILD_DIR)/_static/style.css
+	python3 -m pysassc extensions/odoo_theme/static/style.scss $(HTML_BUILD_DIR)/_static/style.css
 	@echo "Compilation finished."
 
 #=== Development and debugging rules ===#
diff --git a/requirements.txt b/requirements.txt
index 0c0f03252..edc26a226 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
+libsass==0.18.0
 pygments~=2.6.1
 pygments-csv-lexer~=0.1
-pysass~=0.1.0
 sphinx~=3.0
 werkzeug==0.14.1