diff --git a/README.md b/README.md
index 34f9e21..b70e059 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ A new image will be selected if you open `/` directly, or if you click on any di
 
 Browser history is preserved, so you can always go back to any previously displayed image.
 
-Supported file types and extensions are `jp[e]g`, `png`, `gif`, and `webp`.
+Supported file types and extensions are `bmp`, `gif`, `jp[e]g`, `png`, and `webp`.
 
 Builds available [here](https://cdn.seedno.de/builds/roulette).
 
diff --git a/cmd/files.go b/cmd/files.go
index 1748cc6..36430ac 100644
--- a/cmd/files.go
+++ b/cmd/files.go
@@ -31,7 +31,7 @@ import (
 
 var (
 	ErrNoImagesFound = fmt.Errorf("no supported image formats found")
-	extensions       = [7]string{".jpg", ".jpeg", ".png", ".gif", ".webp", ".bmp"}
+	extensions       = [6]string{".jpg", ".jpeg", ".png", ".gif", ".webp", ".bmp"}
 )
 
 type Files struct {
@@ -128,7 +128,7 @@ func preparePath(path string) string {
 }
 
 func appendPath(directory, path string, files *Files, stats *Stats) error {
-	// If caching, check for valid images here, to speed up future pickFile() calls
+	// If caching, only check image types once, during the initial scan, to speed up future pickFile() calls
 	if Cache {
 		image, err := isImage(path)
 		if err != nil {
diff --git a/cmd/version.go b/cmd/version.go
index 828856d..a7602a4 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -10,7 +10,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var Version = "0.20.9"
+var Version = "0.20.10"
 
 func init() {
 	rootCmd.AddCommand(versionCmd)