diff --git a/requirements.txt b/requirements.txt
index 592235aed..a1934c9b3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Cython==0.29.11
 GDAL
-Pillow>=6.2.0
+Pillow==6.2.0
 glob2==0.7
 joblib==0.13.2
 mpi4py==3.0.2