diff --git a/README.md b/README.md
index 137b346a6..e885e4af6 100644
--- a/README.md
+++ b/README.md
@@ -108,7 +108,7 @@ that fine library.
 * (build+runtime) From NCURSES: terminfo 6.1+
 * (OPTIONAL) (build+runtime) From QR-Code-generator: [libqrcodegen](https://github.com/nayuki/QR-Code-generator) 1.5.0+
 * (OPTIONAL) (build+runtime) From [FFMpeg](https://www.ffmpeg.org/): libswscale 5.0+, libavformat 57.0+, libavutil 56.0+
-* (OPTIONAL) (build+runtime) [OpenImageIO](https://github.com/OpenImageIO/oiio) 2.1+
+* (OPTIONAL) (build+runtime) [OpenImageIO](https://github.com/OpenImageIO/oiio) 2.15.0+
 * (OPTIONAL) (testing) [Doctest](https://github.com/onqtam/doctest) 2.3.5+
 * (OPTIONAL) (documentation) [pandoc](https://pandoc.org/index.html) 1.19.2+
 * (OPTIONAL) (python bindings): Python 3.7+, [CFFI](https://pypi.org/project/cffi/) 1.13.2+