diff --git a/requirements.txt b/requirements.txt
index edcef56..deb12ce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 msgpack-python
 msgpack
 numpy
-pynvim
+pynvim == 0.4.3
 types-PyYAML
 pandas
 dask[complete]