diff --git a/CHANGELOG.md b/CHANGELOG.md
index baea2f0..de18698 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- Explicitly set the minimum supported Rust version to 1.67.1
+- Explicitly set the minimum supported Rust version to 1.67
 
 ### Changed
 
diff --git a/Cargo.lock b/Cargo.lock
index 91705c0..39d2c31 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -175,9 +175,9 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "0.5.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd7cc57abe963c6d3b9d8be5b06ba7c8957a930305ca90304f24ef040aa6f961"
+checksum = "2da6da31387c7e4ef160ffab6d5e7f00c42626fe39aea70a7b0f1773f7dd6c1b"
 
 [[package]]
 name = "colorchoice"
@@ -511,6 +511,7 @@ name = "light-curve-dmdt-exec"
 version = "0.6.1"
 dependencies = [
  "clap",
+ "clap_lex",
  "enumflags2",
  "light-curve-dmdt",
  "thiserror",
diff --git a/Cargo.toml b/Cargo.toml
index 45e73c0..feba7af 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ readme = "README.md"
 repository = "https://github.com/light-curve/light-curve-dmdt"
 authors = ["Konstantin Malanchev <hombit@gmail.com>"]
 license = "MIT"
-rust-version = "1.67.1"
+rust-version = "1.67"
 edition = "2018"
 
 [[bin]]
@@ -21,7 +21,9 @@ lto = true
 codegen-units = 1
 
 [dependencies]
+# both clap and clap_lax are set for current MSRV
 clap = { version = "=4.3", features = ["cargo", "wrap_help"] }
+clap_lex = "=0.5.0"
 enumflags2 = "0.7"
 thiserror = "2"