diff --git a/site/docs/install-compile-source.md b/site/docs/install-compile-source.md
index 1f8b08b..9fd1a3b 100644
--- a/site/docs/install-compile-source.md
+++ b/site/docs/install-compile-source.md
@@ -98,6 +98,10 @@
 in-place. For convenience we recommend copying this binary to a directory that's
 on your `PATH` (such as `/usr/local/bin` on Linux).
 
+To build the `bazel` binary in a reproducible way, also set
+[`SOURCE_DATE_EPOCH`](https://reproducible-builds.org/specs/source-date-epoch/)
+in the `compile.sh` step.
+
 <h3 id="bootstrap-windows">2. Bootstrap Bazel on Windows</h3>
 
 ([Scroll up](#bootstrap-unix) for instructions for Linux, macOS, and other