diff --git a/README.md b/README.md
index 163b6fbc..4d6a59ec 100644
--- a/README.md
+++ b/README.md
@@ -28,8 +28,8 @@ Int64
         Returns the current utc epoch timestamp in second
 
 ```ruby
-.now_utc_to_unix_ms :
-Int64
+.now_utc_to_unix_ms_f :
+Float64
 ```
         Returns the current utc epoch timestamp in msecond
 
@@ -42,17 +42,17 @@ Float64
 ### Benchmark :
 ```shell
 $> crystal -v
-Crystal 0.27.2 [60760a546] (2019-02-05)
+Crystal 0.34.0 [4401e90f0] (2020-04-06)
 
-LLVM: 4.0.0
+LLVM: 8.0.0
 Default target: x86_64-unknown-linux-gnu
 $> cd bench
 $> crystal build --release bench.cr
 $> ./bench
-          Time.utc_now.to_unix  19.49M ( 51.31ns) (± 1.25%)  0 B/op   1.13× slower
-   Crtimestamp.now_utc_to_unix  21.98M ( 45.49ns) (± 0.72%)  0 B/op        fastest
-       Time.utc_now.to_unix_ms  19.59M ( 51.03ns) (± 0.93%)  0 B/op   1.12× slower
-Crtimestamp.now_utc_to_unix_ms  21.86M ( 45.74ns) (± 0.98%)  0 B/op        fastest
-        Time.utc_now.to_unix_f  19.47M ( 51.36ns) (± 1.57%)  0 B/op   1.12× slower
- Crtimestamp.now_utc_to_unix_f  21.88M ( 45.71ns) (± 0.95%)  0 B/op        fastest
+              Time.utc.to_unix  31.17M ( 32.08ns) (± 0.79%)  0.0B/op   1.20× slower
+   Crtimestamp.now_utc_to_unix  37.30M ( 26.81ns) (± 0.15%)  0.0B/op        fastest
+           Time.utc.to_unix_ms  27.54M ( 36.31ns) (± 0.53%)  0.0B/op   1.36× slower
+Crtimestamp.now_utc_to_unix_ms  37.36M ( 26.77ns) (± 0.09%)  0.0B/op        fastest
+            Time.utc.to_unix_f  29.93M ( 33.41ns) (± 4.18%)  0.0B/op   1.25× slower
+ Crtimestamp.now_utc_to_unix_f  37.33M ( 26.79ns) (± 2.33%)  0.0B/op        fastest
 ```
diff --git a/bench/bench.cr b/bench/bench.cr
index fd523cb7..ccaa454d 100644
--- a/bench/bench.cr
+++ b/bench/bench.cr
@@ -2,14 +2,14 @@ require "benchmark"
 require "../src/crtimestamp"
 
 Benchmark.ips do |x|
-  x.report("Time.utc_now.to_unix") { Time.utc_now.to_unix }
+  x.report("Time.utc.to_unix") { Time.utc.to_unix }
   x.report("Crtimestamp.now_utc_to_unix") { Crtimestamp.now_utc_to_unix }
 end
 Benchmark.ips do |x|
-  x.report("Time.utc_now.to_unix_ms") { Time.utc_now.to_unix_ms }
-  x.report("Crtimestamp.now_utc_to_unix_ms") { Crtimestamp.now_utc_to_unix_ms }
+  x.report("Time.utc.to_unix_ms") { Time.utc.to_unix_ms }
+  x.report("Crtimestamp.now_utc_to_unix_ms") { Crtimestamp.now_utc_to_unix_ms_f }
 end
 Benchmark.ips do |x|
-  x.report("Time.utc_now.to_unix_f") { Time.utc_now.to_unix_f }
+  x.report("Time.utc.to_unix_f") { Time.utc.to_unix_f }
   x.report("Crtimestamp.now_utc_to_unix_f") { Crtimestamp.now_utc_to_unix_f }
 end
diff --git a/shard.yml b/shard.yml
index 8fe8fe8f..9614246c 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,12 +1,12 @@
 name: crtimestamp
-version: 0.1.0
+version: 0.2.0
 
-crystal: 0.27.2
+crystal: 0.34.0
 
 authors:
-  - Nicolas Dudniczenko <ndudnicz@protonmail.com>
+  - ndudnicz <ndudnicz@protonmail.com>
 
 description: |
-  Faster way to get a timestamp than calling standard Time
+  Faster way to get a timestamp than calling standard Time lib
 
 license: GPL-3.0
diff --git a/src/crtimestamp.cr b/src/crtimestamp.cr
index 424422a5..5a6ecd8d 100644
--- a/src/crtimestamp.cr
+++ b/src/crtimestamp.cr
@@ -31,7 +31,7 @@ struct Crtimestamp
   # ```
   # Time.now_utc_to_unix_ms # => 1452567845876
   # ```
-  def self.now_utc_to_unix_ms : Int64
+  def self.now_utc_to_unix_ms_f : Float64
     seconds, nanoseconds = Crystal::System::Time.compute_utc_seconds_and_nanoseconds
     (seconds * 1_000 + (nanoseconds / NANOSECONDS_PER_MILLISECOND)) - EPOCH_MSECONDS_TIMESTAMP
   end