diff --git a/requirements.txt b/requirements.txt
index 54977069c5b101c03155ad80ae27f6b1f4380b15..c47ed6893d21067c7f5d116b5efb4c818905113c 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 termcolor
 colorlog
 progressbar2 >= 3.18.0
-ncbi_genome_download >= 0.3.0
+ncbi_genome_download >= 0.3.3
 numpy>=1.11
 scipy
 matplotlib>=2.0.0