diff --git a/.abf.yml b/.abf.yml
index 64f7a49..8750246 100644
--- a/.abf.yml
+++ b/.abf.yml
@@ -1,4 +1,6 @@
-sources:
+removed_sources:
   cherrytree-0.29.tar.xz: 82ca79d89d4310318721fa01315f50d51d1e10f0
   cherrytree-0.30.5.tar.xz: dc10337df026138ceea6546e5af57c699cf7961c
   cherrytree-0.32.0.tar.xz: 91dae6aa3c16d97f42a5188ccab5540032b993e9
+sources:
+  cherrytree-0.33.4.tar.xz: 0a5fd34324bae637e22b7e96adcc1828e936dd39