diff --git a/jill/download.py b/jill/download.py
index 02e3f2e..a2fc51a 100644
--- a/jill/download.py
+++ b/jill/download.py
@@ -60,7 +60,9 @@ def download_package(version=None, sys=None, arch=None, *,
         if you want to download from JuliaComputing's s3 buckets.
       outdir: where release is downloaded to. By default it's current folder.
       overwrite: True to overwrite existing releases. By default it's False.
-      update: add `--update` to update release info before downloading.
+      update:
+        add `--update` to update release info for incomplete version string
+        (e.g., `1.0`) before downloading.
       max_try: try `max_try` times before returning a False.
     """
     version = str(version) if version else ''
diff --git a/jill/install.py b/jill/install.py
index 3dfc5bb..8be1a7f 100644
--- a/jill/install.py
+++ b/jill/install.py
@@ -112,7 +112,9 @@ def install_julia(version=None, *,
       upstream:
         manually choose a download upstream. For example, set it to "Official"
         if you want to download from JuliaComputing's s3 buckets.
-      update: add `--update` to update release info before downloading.
+      update:
+        add `--update` to update release info for incomplete version string
+        (e.g., `1.0`) before downloading.
       keep_downloads: True to not remove downloaded releases.
       confirm: add `--confirm` to skip interactive prompt.
     """
@@ -120,7 +122,7 @@ def install_julia(version=None, *,
     symlink_dir = symlink_dir if symlink_dir else default_symlink_dir()
     system, arch = current_system(), current_architecture()
     version = str(version) if version else ''
-    version = latest_version(version, system, arch)
+    version = latest_version(version, system, arch, update=update)
 
     if not confirm:
         question = "jill will:\n"