diff --git a/Cargo.toml b/Cargo.toml
index a987203..724c7ca 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ext-sort"
-version = "0.1.2"
+version = "0.1.3"
 edition = "2021"
 license = "Unlicense"
 description = "rust external sort algorithm implementation"
@@ -14,30 +14,30 @@ categories = ["algorithms"]
 keywords = ["algorithms", "sort", "sorting", "external-sort", "external"]
 
 [dependencies]
-bytesize = { version = "^1.1", optional = true }
-clap = { version = "^3.0", features = ["derive"], optional = true }
-deepsize = { version = "^0.2", optional = true }
-env_logger = { version = "^0.9", optional = true}
-log = "^0.4"
-rayon = "^1.5"
-rmp-serde = "^0.15"
-serde = { version = "^1.0", features = ["derive"] }
-tempfile = "^3.2"
+bytesize = { version = "1.1.0", optional = true }
+clap = { version = "3.0.0", features = ["derive"], optional = true }
+deepsize = { version = "0.2.0", optional = true }
+env_logger = { version = "0.9.0", optional = true}
+log = "0.4.8"
+rayon = "1.5.0"
+rmp-serde = "0.15.0"
+serde = { version = "1.0.120", features = ["derive"] }
+tempfile = "3.2.0"
 
 [dev-dependencies]
-rstest = "^0.12"
-rand = "^0.8"
+rstest = "0.12.0"
+rand = "0.8.0"
 
 [features]
 memory-limit = ["deepsize"]
 
 [[bin]]
 name = "ext-sort"
-required-features = ["bytesize", "clap", "env_logger"]
+required-features = ["bytesize", "clap", "env_logger", "memory-limit"]
 
 [[example]]
 name = "quickstart"
-required-features = ["bytesize", "env_logger"]
+required-features = ["bytesize", "env_logger", "memory-limit"]
 
 [[example]]
 name = "custom_serializer"
diff --git a/README.md b/README.md
index 650fd3d..e585ed8 100644
--- a/README.md
+++ b/README.md
@@ -46,10 +46,10 @@ Activate `memory-limit` feature of the ext-sort crate on Cargo.toml:
 
 ```toml
 [dependencies]
-ext-sort = { version = "^0.1.2", features = ["memory-limit"] }
+ext-sort = { version = "^0.1.3", features = ["memory-limit"] }
 ```
 
-``` rust
+```rust
 use std::fs;
 use std::io::{self, prelude::*};
 use std::path;