diff --git a/Project.toml b/Project.toml
index dbeb7fb..3a3b757 100644
--- a/Project.toml
+++ b/Project.toml
@@ -15,7 +15,7 @@ libwebp_jll = "c5f90fcd-3b7e-5836-afba-fc50a0988cb2"
 CEnum = "0.4, 0.5"
 ColorTypes = "0.11, 0.12"
 FileIO = "1"
-FixedPointNumbers = "0.8"
+FixedPointNumbers = "0.8, 0.9"
 ImageCore = "0.10"
 julia = "1"
 libwebp_jll = "1"