diff --git a/requirements-dev.txt b/requirements-dev.txt
index eb191a3..e577411 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -9,5 +9,6 @@ pydocstyle
 pylint<3
 pylint-per-file-ignores
 pylint_quotes
+pystac>=1.10.0  # requried for custom STAC validator (see https://github.com/stac-utils/pystac/pull/1320)
 pytest
 safety
diff --git a/requirements.txt b/requirements.txt
index 7df3048..2cd1644 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
 jsonschema
-# FIXME: temporarily refer to the validator feature until released (https://github.com/stac-utils/pystac/pull/1320)
-pystac @ git+https://github.com/crim-ca/pystac@custom-validator
+pystac
 shapely