diff --git a/categories/blob/react/src/components/FileSelectBox/index.tsx b/categories/blob/react/src/components/FileSelectBox/index.tsx
index c6ec584..2d228d3 100644
--- a/categories/blob/react/src/components/FileSelectBox/index.tsx
+++ b/categories/blob/react/src/components/FileSelectBox/index.tsx
@@ -83,30 +83,30 @@ export const FileSelectBoxDefaultPreviewComponent = React.forwardRef<
     {!mini && (
     <>
       {typeof file?.type === 'string' && (
-      <div className="w-full whitespace-nowrap overflow-hidden text-ellipsis">{file?.type}</div>
+        <div className="w-full whitespace-nowrap overflow-hidden text-ellipsis">{file?.type}</div>
       )}
       {typeof file?.size === 'number' && (
-      <div
-        title={new Intl.NumberFormat(undefined, {
-          style: 'unit',
-          unit: 'byte',
-          unitDisplay: 'long',
-        }).format(file.size ?? 0)}
-        className="w-full whitespace-nowrap overflow-hidden text-ellipsis tabular-nums"
-      >
-        {new Intl.NumberFormat(undefined, {
-          style: 'unit',
-          unit: 'kilobyte',
-          unitDisplay: 'long',
-        }).format(file.size ?? 0)}
-      </div>
+        <div
+          title={new Intl.NumberFormat(undefined, {
+            style: 'unit',
+            unit: 'byte',
+            unitDisplay: 'long',
+          }).format(file.size ?? 0)}
+          className="w-full whitespace-nowrap overflow-hidden text-ellipsis tabular-nums"
+        >
+          {new Intl.NumberFormat(undefined, {
+            style: 'unit',
+            unit: 'kilobyte',
+            unitDisplay: 'long',
+          }).format(file.size ?? 0)}
+        </div>
       )}
       {typeof file?.lastModified === 'number' && (
-      <div className="w-full whitespace-nowrap overflow-hidden text-ellipsis">
-        <time dateTime={new Date(file.lastModified).toISOString()}>
-          {new Date(file.lastModified).toDateString()}
-        </time>
-      </div>
+        <div className="w-full whitespace-nowrap overflow-hidden text-ellipsis">
+          <time dateTime={new Date(file.lastModified).toISOString()}>
+            {new Date(file.lastModified).toDateString()}
+          </time>
+        </div>
       )}
     </>
     )}
@@ -129,6 +129,7 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
     placeholder,
     previewComponent: FilePreviewComponent = FileSelectBoxDefaultPreviewComponent,
     style,
+    onBlur,
     ...etcProps
   },
   forwardedRef,
@@ -181,18 +182,24 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
   const labelId = React.useId();
   const id = useFallbackId(idProp);
 
-  const cancelEvent = (e: React.DragEvent) => {
+  const cancelEvent: React.DragEventHandler<HTMLDivElement> = React.useCallback((e) => {
     e.stopPropagation();
     e.preventDefault();
-  };
+  }, []);
 
-  const filesCount = fileList?.length ?? 0;
+  const handleDrop: React.DragEventHandler<HTMLDivElement> = React.useCallback((e) => {
+    cancelEvent(e);
+    doSetFileList(e);
+  }, [cancelEvent, doSetFileList]);
 
-  const handleFileChange: React.ChangeEventHandler<FileSelectBoxDerivedElement> = (e) => {
+  const handleFileChange: React.ChangeEventHandler<
+    FileSelectBoxDerivedElement
+  > = React.useCallback((e) => {
     const { currentTarget } = e;
     if (clientSide && currentTarget.files && currentTarget.files.length > 0) {
       setFileList(currentTarget.files);
       setLastUpdated(Date.now());
+      setAboutToSelect(false);
       onChange?.(e);
       return;
     }
@@ -205,26 +212,29 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
     }
     e.preventDefault();
     e.currentTarget.files = fileList ?? null;
-  };
+    setAboutToSelect(false);
+  }, [clientSide, fileList, onChange]);
 
-  const handleKeyDown: React.KeyboardEventHandler<FileSelectBoxDerivedElement> = (e) => {
+  const handleKeyDown: React.KeyboardEventHandler<
+    FileSelectBoxDerivedElement
+  > = React.useCallback((e) => {
     const { code } = e;
     if (code === 'Backspace' || code === 'Delete') {
       setDeleteKeyPressed(true);
     } else if (code === 'Enter' || code === 'Space' || code === 'Return') {
       setAboutToSelect(true);
     }
-  };
+  }, []);
 
-  const handleKeyUp: React.KeyboardEventHandler<FileSelectBoxDerivedElement> = (e) => {
+  const handleKeyUp: React.KeyboardEventHandler<
+    FileSelectBoxDerivedElement
+  > = React.useCallback((e) => {
     const { code } = e;
     if (code === 'Backspace' || code === 'Delete') {
       doSetFileList(e);
       setDeleteKeyPressed(false);
-    } else if (code === 'Enter' || code === 'Space' || code === 'Return') {
-      setAboutToSelect(false);
     }
-  };
+  }, [doSetFileList]);
 
   const handleReselectMouseDown: React.MouseEventHandler<
     HTMLButtonElement
@@ -253,6 +263,14 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
     });
   }, [defaultRef]);
 
+  const handleBlur: React.FocusEventHandler<
+    FileSelectBoxDerivedElement
+  > = React.useCallback((e) => {
+    setAboutToSelect(false);
+    setDeleteKeyPressed(false);
+    onBlur?.(e);
+  }, [onBlur]);
+
   React.useEffect(() => {
     const handleLabelMouseUp = () => {
       setAboutToSelect(false);
@@ -265,6 +283,8 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
     };
   }, [defaultRef, aboutToSelect]);
 
+  const filesCount = fileList?.length ?? 0;
+
   return (
     <div
       className={clsx(
@@ -276,10 +296,7 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
       )}
       onDragEnter={clientSide ? cancelEvent : undefined}
       onDragOver={clientSide ? cancelEvent : undefined}
-      onDrop={clientSide ? (e) => {
-        cancelEvent(e);
-        doSetFileList(e);
-      } : undefined}
+      onDrop={clientSide ? handleDrop : undefined}
       data-testid="root"
       style={{
         height: clientSide ? 64 : undefined,
@@ -307,8 +324,9 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
         <button
           type="button"
           disabled={disabled}
+          tabIndex={-1}
           className={clsx(
-            'flex items-center justify-center absolute top-0 left-0 w-full h-full cursor-pointer select-none',
+            'flex items-center focus:outline-0 justify-center absolute top-0 left-0 w-full h-full cursor-pointer select-none',
             (fileList?.length ?? 0) > 0 && 'opacity-0',
           )}
           data-testid="clickArea"
@@ -324,6 +342,7 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
         disabled={disabled}
         ref={defaultRef}
         type="file"
+        onBlur={handleBlur}
         onKeyDown={clientSide ? handleKeyDown : undefined}
         onKeyUp={clientSide ? handleKeyUp : undefined}
         className={clsx(
@@ -411,8 +430,9 @@ export const FileSelectBox = React.forwardRef<FileSelectBoxDerivedElement, FileS
                 disabled={disabled}
                 onMouseDown={handleReselectMouseDown}
                 onMouseUp={handleReselectMouseUp}
+                tabIndex={-1}
                 className={clsx(
-                  'flex w-full h-full bg-negative text-primary cursor-pointer items-center justify-center leading-none gap-4 select-none',
+                  'flex w-full h-full focus:outline-0 bg-negative text-primary cursor-pointer items-center justify-center leading-none gap-4 select-none',
                   {
                     'group-focus-within:text-secondary group-focus-within:active:text-tertiary': !aboutToSelect,
                     'text-tertiary': aboutToSelect,