diff --git a/scripts/courses.py b/scripts/courses.py
index cc22c56..9f46278 100755
--- a/scripts/courses.py
+++ b/scripts/courses.py
@@ -9,7 +9,7 @@ class Course():
         self.path = path
         self.name = path.stem
 
-        self.info = yaml.load((path / COURSE_INFO_FILE).open())
+        self.info = yaml.safe_load((path / COURSE_INFO_FILE).open())
         self._lectures = None
 
     @property