diff --git a/pyproject.toml b/pyproject.toml
index b806069..2bc56cd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "fasta-checksum-utils"
-version = "0.3.1"
+version = "0.4.0"
 description = "Library and command-line utility for checksumming FASTA files and individual contigs."
 authors = ["David Lougheed <david.lougheed@gmail.com>"]
 license = "LGPL-3.0"