diff --git a/doc/src/manual/command-line-interface.md b/doc/src/manual/command-line-interface.md
index c2bef7c9b73c2..b27c6bee1be38 100644
--- a/doc/src/manual/command-line-interface.md
+++ b/doc/src/manual/command-line-interface.md
@@ -213,6 +213,7 @@ The following is a complete list of command-line switches available when launchi
 |`--output-incremental={yes\|no*}`      |Generate an incremental output file (rather than complete)|
 |`--trace-compile={stderr,name}`        |Print precompile statements for methods compiled during execution or save to a path|
 |`--image-codegen`                      |Force generate code in imaging mode|
+|`--heap-size-hint=<size>`              |Forces garbage collection if memory usage is higher than that value. The memory hint might be specified in megabytes (e.g., 500M) or gigabytes (e.g., 1G)|
 
 
 !!! compat "Julia 1.1"