diff --git a/requirements.txt b/requirements.txt
index 1aeb4f78..6fa26c0a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,4 @@ tqdm==4.54.0
 colorlog==4.6.2
 emcee==3.0.2
 pybtex==0.23.0
-flex-format==0.2.1
-
-git+https://github.com/AWehrhahn/flex-format.git
+flex-format==0.2.2