diff --git a/.gitmodules b/.gitmodules
index b4d18a4..290bd7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -46,3 +46,6 @@
 [submodule "Niko"]
 	path = Niko
 	url = https://github.com/niknetniko/AdventOfCode
+[submodule "Silvius"]
+	path = Silvius
+	url = https://github.com/ajuvercr/aoc_2020
diff --git a/README.md b/README.md
index a3700bc..100daf7 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@
 | Lode           | https://gitlab.com/Bond_009/advent-of-code-2020   | C          |
 | JP             | https://github.com/Jan-PieterBaert/advent-of-code | Rust       |
 | Niko           | https://github.com/niknetniko/AdventOfCode        | Elixir     |
+| Silvius        | https://github.com/ajuvercr/aoc_2020              | Haskell    |
 
 * repo clonen:
 
diff --git a/Silvius b/Silvius
new file mode 160000
index 0000000..9c4a796
--- /dev/null
+++ b/Silvius
@@ -0,0 +1 @@
+Subproject commit 9c4a7960b16b0fe14b38dff0f49120d6796bd16e