diff --git a/Cargo.toml b/Cargo.toml
index 33dc9b8e..633a9cad 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "libcryptsetup-rs"
 version = "0.16.1"
 authors = ["John Baublitz <jbaublitz@redhat.com>"]
 edition = "2024"
-rust-version = "1.87.0"  # LOWEST SUPPORTED RUST TOOLCHAIN
+rust-version = "1.89.0"  # LOWEST SUPPORTED RUST TOOLCHAIN
 description = "High level Rust bindings for libcryptsetup"
 license = "MPL-2.0"
 documentation = "https://docs.rs/libcryptsetup-rs"
diff --git a/libcryptsetup-rs-sys/Cargo.toml b/libcryptsetup-rs-sys/Cargo.toml
index 1932d861..de74f68c 100644
--- a/libcryptsetup-rs-sys/Cargo.toml
+++ b/libcryptsetup-rs-sys/Cargo.toml
@@ -3,7 +3,7 @@ name = "libcryptsetup-rs-sys"
 version = "0.7.0"
 authors = ["John Baublitz <jbaublitz@redhat.com>"]
 edition = "2024"
-rust-version = "1.87.0"  # LOWEST SUPPORTED RUST TOOLCHAIN
+rust-version = "1.89.0"  # LOWEST SUPPORTED RUST TOOLCHAIN
 description = "Low level bindings for libcryptsetup"
 license = "MPL-2.0"
 documentation = "https://docs.rs/libcryptsetup-rs-sys"