diff --git a/Cargo.lock b/Cargo.lock
index e81c03e..7a17349 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -74,31 +74,40 @@ dependencies = [
  "libc",
  "num-integer",
  "num-traits",
- "time",
+ "time 0.1.44",
  "winapi",
 ]
 
 [[package]]
 name = "clap"
-version = "3.1.8"
+version = "3.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71c47df61d9e16dc010b55dba1952a57d8c215dbb533fd13cdd13369aac73b1c"
+checksum = "7c167e37342afc5f33fd87bbc870cedd020d2a6dffa05d45ccd9241fbdd146db"
 dependencies = [
  "atty",
  "bitflags",
+ "clap_lex",
  "indexmap",
  "lazy_static",
- "os_str_bytes",
  "strsim",
  "termcolor",
  "textwrap",
 ]
 
+[[package]]
+name = "clap_lex"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "189ddd3b5d32a70b35e7686054371742a937b0d99128e76dde6340210e966669"
+dependencies = [
+ "os_str_bytes",
+]
+
 [[package]]
 name = "darling"
-version = "0.12.4"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f2c43f534ea4b0b049015d00269734195e6d3f0f6635cb692251aca6f9f8b3c"
+checksum = "f1a5d2e8b5a94b2261efb20e99a01255b9c5293797d69bbf04600567b2f9b8d7"
 dependencies = [
  "darling_core",
  "darling_macro",
@@ -106,9 +115,9 @@ dependencies = [
 
 [[package]]
 name = "darling_core"
-version = "0.12.4"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e91455b86830a1c21799d94524df0845183fa55bafd9aa137b01c7d1065fa36"
+checksum = "8f1c7d56716be82d9c6adb967cfe700955179ea88806e898483dad6987330a54"
 dependencies = [
  "fnv",
  "ident_case",
@@ -120,9 +129,9 @@ dependencies = [
 
 [[package]]
 name = "darling_macro"
-version = "0.12.4"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29b5acf0dea37a7f66f7b25d2c5e93fd46f8f6968b1a5d7a3e02e97768afc95a"
+checksum = "64dd7e5a75a00cb6799ae9fbbfc3bba0134def6579a9e27564e72c839c837bed"
 dependencies = [
  "darling_core",
  "quote",
@@ -131,18 +140,18 @@ dependencies = [
 
 [[package]]
 name = "derive_builder"
-version = "0.11.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11d918e7dabe374a51dae0f29d818fece3b218b8b4eabec3bc4d42c537e7ed8f"
+checksum = "d07adf7be193b71cc36b193d0f5fe60b918a3a9db4dad0449f57bcfd519704a3"
 dependencies = [
  "derive_builder_macro",
 ]
 
 [[package]]
 name = "derive_builder_core"
-version = "0.11.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f712c2d4e52d5fcae53584e461dcb92fb2202e144ebf83ab0ba4360d18b767c7"
+checksum = "1f91d4cfa921f1c05904dc3c57b4a32c38aed3340cce209f3a6fd1478babafc4"
 dependencies = [
  "darling",
  "proc-macro2",
@@ -152,9 +161,9 @@ dependencies = [
 
 [[package]]
 name = "derive_builder_macro"
-version = "0.11.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8a2ac71b4a9a590dde6cee3ca4687aca5e7ce06f4ee297c5a959de5f1e42b2e"
+checksum = "8f0314b72bed045f3a68671b3c86328386762c93f82d98c65c3cb5e5f573dd68"
 dependencies = [
  "derive_builder_core",
  "syn",
@@ -263,6 +272,12 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itoa"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -271,9 +286,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.123"
+version = "0.2.124"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb691a747a7ab48abc15c5b42066eaafde10dc427e3b6ee2a1cf43db04c763bd"
+checksum = "21a41fed9d98f27ab1c6d161da622a4fa35e8a54a8adc24bbf3ddd0ef70b0e50"
 
 [[package]]
 name = "log"
@@ -286,7 +301,7 @@ dependencies = [
 
 [[package]]
 name = "lowcharts"
-version = "0.4.3"
+version = "0.4.4"
 dependencies = [
  "assert_cmd",
  "atty",
@@ -334,14 +349,20 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "num_threads"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aba1801fb138d8e85e11d0fc70baf4fe1cdfffda7c6cd34a854905df588e5ed0"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "os_str_bytes"
 version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e22443d1643a904602595ba1cd8f7d896afe56d26712531c5ff73a15b2fbf64"
-dependencies = [
- "memchr",
-]
 
 [[package]]
 name = "predicates"
@@ -434,13 +455,13 @@ dependencies = [
 
 [[package]]
 name = "simplelog"
-version = "0.11.2"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1348164456f72ca0116e4538bdaabb0ddb622c7d9f16387c725af3e96d6001c"
+checksum = "48dfff04aade74dd495b007c831cd6f4e0cee19c344dd9dc0884c0289b70a786"
 dependencies = [
- "chrono",
  "log",
  "termcolor",
+ "time 0.3.9",
 ]
 
 [[package]]
@@ -506,6 +527,24 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2702e08a7a860f005826c6815dcac101b19b5eb330c27fe4a5928fec1d20ddd"
+dependencies = [
+ "itoa",
+ "libc",
+ "num_threads",
+ "time-macros",
+]
+
+[[package]]
+name = "time-macros"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42657b1a6f4d817cda8e7a0ace261fe0cc946cf3a80314390b22cc61ae080792"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.2"
diff --git a/Cargo.toml b/Cargo.toml
index aa5bc3e..c0362ee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lowcharts"
-version = "0.4.3"
+version = "0.4.4"
 authors = ["JuanLeon Lahoz <juanleon.lahoz@gmail.com>"]
 edition = "2018"
 description = "Tool to draw low-resolution graphs in terminal"
@@ -17,7 +17,7 @@ clap = { version = "^3", features = ["cargo"] }
 yansi = "^0"
 atty = "^0"
 derive_builder = "^0"
-regex = "^1"
+regex = "^1.5"
 chrono = "0.4"
 humantime = "^2"
 simplelog = "^0"