diff --git a/imdb.py b/imdb.py
index 49a4b6e..674ad65 100644
--- a/imdb.py
+++ b/imdb.py
@@ -42,7 +42,7 @@ _CITATION = """\
 }
 """
 
-_DOWNLOAD_URL = "http://ai.stanford.edu/~amaas/data/sentiment/aclImdb_v1.tar.gz"
+_DOWNLOAD_URL = "https://ai.stanford.edu/~amaas/data/sentiment/aclImdb_v1.tar.gz"
 
 
 class IMDBReviewsConfig(datasets.BuilderConfig):