diff --git a/Chirp/Chirp-Bold.ttf b/Chirp/Chirp-Bold.ttf
new file mode 100644
index 0000000..0e8bb3c
Binary files /dev/null and b/Chirp/Chirp-Bold.ttf differ
diff --git a/Chirp/Chirp-Regular.ttf b/Chirp/Chirp-Regular.ttf
new file mode 100644
index 0000000..c801e9f
Binary files /dev/null and b/Chirp/Chirp-Regular.ttf differ
diff --git a/flake.nix b/flake.nix
index 9b67f73..20e2b00 100644
--- a/flake.nix
+++ b/flake.nix
@@ -25,6 +25,13 @@
               license = licenses.ofl;
               author = "Pablo Impallari and Alexi Vanyashin";
             }
+            {
+              # Twitter custom font, based on GT America
+              name = "Chirp";
+              dir = ./Chirp;
+              license = licenses.unfree;
+              author = "Grilli Type Foundry";
+            }
             {
               # Deutsche Bahn website font
               name = "DB Screen";