diff --git a/README.md b/README.md
index 4876ce6..919fbab 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ Options:
   -t, --timeline                         Print timeline
   -a, --auto                             Run in auto mode
   -c, --cache                            Cache resolved dependencies
-  -ans, --allow-non-semver               Allow non-semver versions
+  -ans, --allow-non-semver               Allow non-semver versions (compare with dates then, experimental)
   -cf, --cache-file <file>               Cache file (default: "./.dependency-time-machine-cache.json")
   -e, --exclude <dependency>             Exclude dependency from update, separated by comma
   -r, --registry-url <url>               Registry url (default: "https://registry.npmjs.org")
diff --git a/src/index.ts b/src/index.ts
index 4a63eb9..3649817 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -23,7 +23,7 @@ program
   .option("-t, --timeline", "Print timeline")
   .option("-a, --auto", "Run in auto mode")
   .option("-c, --cache", "Cache resolved dependencies")
-  .option("-ans, --allow-non-semver", "Allow non-semver versions")
+  .option("-ans, --allow-non-semver", "Allow non-semver versions (compare with dates then, experimental)")
   .option(
     "-cf, --cache-file <file>",
     "Cache file",