diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba2d1f9c..89652790 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,22 @@
+## v0.12.0
+    - Replaces the semingly unmainted chrono library with the time crate.
+    - Addresses through this update 
+        - RUSTSEC-2020-0159 (chrono)
+        - RUSTSEC-2020-0071 (time)
+    - `ConfigBuilder::set_time_to_local` is replaced by `ConfigBuilder::set_time_offset_to_local`.
+        - This function requires the new (and by default activated) `local-offset` feature.
+        - This function may fail, for more information read the docs.
+        - simplelog will not determine the local offset dynamically anymore, but only once, when this config option is set.
+            - Due to safety reasons there is no way to provide this property currently.
+    - `ConfigBuilder::set_time_offset` now takes a `time::UtcOffset` instead of a `chrono::FixedOffset`.
+    - `ConfigBuilder::set_time_format` has been replaced by three new variants
+        - `ConfigBuilder::set_time_format_rfc2822` sets the time format to use the format described by rfc2822.
+        - `ConfigBuilder::set_time_format_rfc3339` sets the time format to use the format described by rfc3339.
+        - `ConfigBuilder::set_time_format_custom` sets the time format to a custom time format best created using `time::macros::format_description`.
+            - Runtime provided time format configuration is possible, but difficult due to lifetime constraints.
+            - Fixing this will require a solution to https://github.com/time-rs/time/issues/429
+        - *Note*: The default format is unchanged "[hour]:[minute]:[second]"
+
 ## v0.11.0
     - Add colored log levels using `ansi_term` (PR #88, credits to @manio)
     - Add target padding (PR #85, credits to @bytebeamio)
diff --git a/Cargo.toml b/Cargo.toml
index c76582dd..12cf3e26 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "simplelog"
-version = "0.11.2"
+version = "0.12.0-alpha1"
 edition = "2018"
 authors = ["Drakulix <github@drakulix.de>"]
 description = "A simple and easy-to-use logging facility for Rust's log crate"
diff --git a/README.md b/README.md
index b095452a..a418cd58 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ fn main() {
 ### Results in
 ```
 $ cargo run --example usage
-   Compiling simplelog v0.10.0 (file:///home/drakulix/Projects/simplelog)
+   Compiling simplelog v0.12.0 (file:///home/drakulix/Projects/simplelog)
      Running `target/debug/examples/usage`
 [ERROR] Bright red error
 ```
@@ -57,7 +57,7 @@ and my_rust_binary.log
 Just add
 ```
 [dependencies]
-simplelog = "^0.10.0"
+simplelog = "^0.12.0"
 ```
 to your `Cargo.toml`