diff --git a/docs/install.md b/docs/install.md
index 051e924e..4358f2ca 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -102,6 +102,10 @@ To install the prebuilt sharp binaries from a custom URL,
 set the `sharp_binary_host` npm config option
 or the `npm_config_sharp_binary_host` environment variable.
 
+To install the prebuilt sharp binaries from a directory on the local filesystem,
+set the `sharp_local_prebuilds` npm config option
+or the `npm_config_sharp_local_prebuilds` environment variable.
+
 To install the prebuilt libvips binaries from a custom URL,
 set the `sharp_libvips_binary_host` npm config option
 or the `npm_config_sharp_libvips_binary_host` environment variable.
diff --git a/package.json b/package.json
index 10e973b0..053aefbe 100644
--- a/package.json
+++ b/package.json
@@ -120,7 +120,7 @@
     "color": "^3.1.3",
     "detect-libc": "^1.0.3",
     "node-addon-api": "^3.1.0",
-    "prebuild-install": "^6.0.1",
+    "prebuild-install": "^6.1.1",
     "semver": "^7.3.5",
     "simple-get": "^3.1.0",
     "tar-fs": "^2.1.1",