diff --git a/lang/python/python-package-install.sh b/lang/python/python-package-install.sh
index d5a50322f4..e5f6ec8938 100644
--- a/lang/python/python-package-install.sh
+++ b/lang/python/python-package-install.sh
@@ -1,6 +1,11 @@
 #!/bin/sh
 set -e
 
+[ -z "$SOURCE_DATE_EPOCH" ] || {
+	PYTHONHASHSEED="$SOURCE_DATE_EPOCH"
+	export PYTHONHASHSEED
+}
+
 process_filespec() {
 	local src_dir="$1"
 	local dst_dir="$2"