diff --git a/Cargo.toml b/Cargo.toml
index 1615fc0..edbe0c7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,5 +32,5 @@ log = ">=0.4.14, <0.4.19"
 
 [dependencies.core_io]
 git = "https://git.m-labs.hk/srenblad/rs-core_io.git"
-branch = "main"
+rev = "e9d3edf027"
 optional = true