diff --git a/Cargo.toml b/Cargo.toml
index d4bdf654..f597b6cb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ default-members = ["hdf5", "hdf5-types", "hdf5-derive", "hdf5-sys"]
 
 [workspace.package]
 version = "0.9.1" # !V
-rust-version = "1.77.0"
+rust-version = "1.80.0"
 authors = [
     "Ivan Smirnov <aldanor@users.noreply.github.com>",
     "Magnus Ulimoen <mulimoen@users.noreply.github.com>",
diff --git a/README.md b/README.md
index 6cb5ad85..f2a02de7 100644
--- a/README.md
+++ b/README.md
@@ -118,7 +118,7 @@ toolchains; macOS Catalina).
 ### Rust
 
 `hdf5` crate is tested continuously for all three official release channels, and
-requires a reasonably recent Rust compiler (e.g. of version 1.77 or newer).
+requires a reasonably recent Rust compiler (e.g. of version 1.80 or newer).
 
 ### HDF5