diff --git a/README.md b/README.md
index 50295ff..a868497 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,7 @@ Dart Sass Maven Plugin will determine the latest Dart Sass version available on
 
 ## Offline operation
 
-This plugin included all released archives for a given Dart Sass version in previous versions. However, starting from version 1.0.0, this plugin will download the latest release of Dart Sass if it's not found in the temporary folder or in the cached files' directory. Should this plugin be used in an air-capped environment, you should provide a release archive inside the cached files directory and at least pin the Dart Sass' release version with the `<version>` parameter. The release archive should be a file named `release` on the subpath `<os>`/`<arch>`/`<version>`/ inside the cached files' directory.
+This plugin included all released archives for a given Dart Sass version in previous versions. However, starting from version 1.0.0, this plugin will download the latest release of Dart Sass if it's not found in the temporary folder or in the cached files' directory. Should this plugin be used in an air-capped environment, you _must_ provide a release archive inside the cached files directory and at least pin the Dart Sass' release version with the `<version>` parameter. The release archive _must_ be a file named `release` on the subpath `<os>`/`<arch>`/`<version>`/ inside the cached files' directory.
 
 ## Proxy connections