diff --git a/pyproject.toml b/pyproject.toml
index 809805b..19eaec1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "oct_converter"
-version = "0.5.5"
+version = "0.5.6"
 description = "Extract OCT and fundus data from proprietary file formats."
 readme = "README.md"
 authors = [{ name = "Mark Graham", email = "markgraham539@gmail.com" }]
@@ -39,7 +39,7 @@ include = ["oct_converter*","examples"]
 exclude= ["my_example_volumes*"]
 
 [tool.bumpver]
-current_version = "0.5.5"
+current_version = "0.5.6"
 version_pattern = "MAJOR.MINOR.PATCH"
 commit_message = "bump version {old_version} -> {new_version}"
 commit = true