diff --git a/requirements.txt b/requirements.txt
index a16f279..94f3cf3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 selenium==4.5.0
 six==1.16.0
 taskcluster==44.22.1
-firefox_code_coverage==1.1.6
+firefox_code_coverage==1.3.15