diff --git a/pyproject.toml b/pyproject.toml
index b0dbb10e0..381b6fbc0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ dependencies = [
     'importlib_resources; python_version < "3.9"',
     "beautifulsoup4",  # to clean up HTML in DCAN executive summary outputs
     "h5py",  # for DCAN motion file
-    "indexed_gzip ~= 1.6.4",  # for loading imgs in nibabel
+    "indexed_gzip ~= 1.8.7",  # for loading imgs in nibabel
     "jinja2 ~= 3.0.0",  # for executive summary
     "matplotlib ~= 3.4.2",
     "networkx ~= 2.8.8",  # nipype needs networkx, but 3+ isn't compatible with nipype 1.8.5