diff --git a/alpine/etc/periodic/15m/trim b/alpine/etc/periodic/15m/trim
new file mode 100755
index 000000000..415b91d1b
--- /dev/null
+++ b/alpine/etc/periodic/15m/trim
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Windows always has TRIM support, clean out unused frequently
+[ "$(mobyplatform)" = "windows" ] && /sbin/fstrim /var