diff --git a/README.md b/README.md
index 70717f9..8deb171 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,16 @@
-#### My solutions to the [2020](https://adventofcode.com/2020) and [2021](https://adventofcode.com/2021) [advent of code](https://adventofcode.com).
+#### My solutions to the [2019](https://adventofcode.com/2019), [2020](https://adventofcode.com/2020) and [2021](https://adventofcode.com/2021) [Advent of Code](https://adventofcode.com), in C and Bash.
 
 #### My own rules :
- - **C** : Only *standard* libraries (for example, no external sort).
- - **bash**: Pure bash only: No external commands allowed (grep, sed, etc...).
+ - **C** : Only *standard* libraries (for example, no external sort). However, I may use my *own* includes and libraries (started in 2021).
+ - **bash**: Pure bash only: No external commands allowed (grep, sed, awk, etc...).
 
-#### Done 2020 (both C and bash, Cobol for day 1) :
- -  Day  1:     Bash, C, and Cobol
- -  Days 2-18:  Bash and C
- -  Days 19-22: Bash
+#### Advent of Code 2019
+ - `C`: Days 1-9
 
-#### Done 2021 (C only) :
- -  Days  1-25: C
+#### Advent of Code 2020
+ - `C`: Days 1-18
+ - `Bash`: Days 1-23
+ - `Cobol`: Day 1 (!!)
+
+#### Advent of Code 2020
+ - `C`: Days 1-25