diff --git a/validation/Dockerfile b/validation/Dockerfile
index d1acba5969b57eda8be70c430d53f05b709829fa..1393478ca656a112de0707c18d51b44b49edde05 100644
--- a/validation/Dockerfile
+++ b/validation/Dockerfile
@@ -91,7 +91,7 @@ RUN set -e pipefail; \
     apk add curl; \
     export _DICT_DIR="${SRC_DIR}/mmcif_dicts"; \
     export _DICT_URL="https://mmcif.wwpdb.org/dictionaries/ascii"; \
-    export _PATHSPEC="1.4.1"; \
+    export _PATHSPEC="557bda7"; \
     export _REPO_URL="https://raw.githubusercontent.com/ihmwg/ModelCIF/${_PATHSPEC}"; \
     export _MA_DICT_URL="${_REPO_URL}/dist/mmcif_ma.dic"; \
     export _DICT_REPO="ModelCIF.git"; \