diff --git a/scrapy/requirements.txt b/scrapy/requirements.txt
index 8b4ff4f..0498443 100644
--- a/scrapy/requirements.txt
+++ b/scrapy/requirements.txt
@@ -18,7 +18,7 @@ lxml==4.6.3
 matlink-gpapi==0.4.4.5
 parsel==1.6.0
 Protego==0.1.16
-protobuf==3.13.0
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyaxmlparser==0.3.24