diff --git a/CHANGELOG.md b/CHANGELOG.md
index 51f9ed0..289caf3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ All notable changes to this project will be documented in this file.
 ## [1.49.0]
 - Enabled MongoDB URI validation
 - AWS + GCP validators now respect HTTPS_PROXY and share a consistent user agent across AWS, GCP, and HTTP validation
+- Increase max-file-size default to 256 mb (up from 64 mb)
 
 ## [1.48.0]
 - Improved error message when self-update cannot find the current binary
diff --git a/README.md b/README.md
index 1da58dd..bea6c11 100644
--- a/README.md
+++ b/README.md
@@ -285,11 +285,11 @@ cat /path/to/file.py | kingfisher scan -
 
 ### Limit maximum file size scanned (`--max-file-size`)
 
-By default, Kingfisher skips files larger than **64 MB**. You can raise or lower this cap per run with `--max-file-size`, which takes a value in **megabytes**.
+By default, Kingfisher skips files larger than **256 MB**. You can raise or lower this cap per run with `--max-file-size`, which takes a value in **megabytes**.
 
 ```bash
-# Scan files up to 250 mb in size
-kingfisher scan /some/file --max-file-size 250
+# Scan files up to 500 mb in size
+kingfisher scan /some/file --max-file-size 500
 ```
 
 ### Scan using a rule _family_ with one flag