diff --git a/Cargo.toml b/Cargo.toml
index a034997..7e36bd4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ repository = "https://github.com/steven-omaha/pacdef"
 readme = "README.md"
 keywords = ["package-manager", "linux", "declarative", "cli"]
 categories = ["command-line-utilities"]
-rust-version = "1.65"
+rust-version = "1.70"
 
 [workspace]
 members = ["crates/pacdef_macros", "crates/pacdef_core"]
diff --git a/README.md b/README.md
index 5773095..613da2f 100644
--- a/README.md
+++ b/README.md
@@ -216,6 +216,6 @@ Pacdef is supported by [topgrade](https://github.com/topgrade-rs/topgrade).
 
 ### minimum supported rust version (MSRV)
 
-MSRV is 1.65.0. Development is conducted against the latest stable version.
+MSRV is 1.70.0 due to dependencies that require this specific version. Development is conducted against the latest stable version.