diff --git a/rakelib/epoch.rake b/rakelib/epoch.rake
deleted file mode 100644
index 80f27c9571..0000000000
--- a/rakelib/epoch.rake
+++ /dev/null
@@ -1,5 +0,0 @@
-task "build" => "date_epoch"
-
-task "date_epoch" do
-  ENV["SOURCE_DATE_EPOCH"] = IO.popen(%W[git -C #{__dir__} log -1 --format=%ct], &:read).chomp
-end