diff --git a/.test-conda-env-py3-requirements.txt b/.test-conda-env-py3-requirements.txt
index 45c20c1f8b09a6a20cc232eb0e1ce05eb69aa403..8c9f55d9120f26d532da4ebc8a0df1a60c07c03e 100644
--- a/.test-conda-env-py3-requirements.txt
+++ b/.test-conda-env-py3-requirements.txt
@@ -1,3 +1,3 @@
-git+https://gitlab.tiker.net/inducer/boxtree
+git+https://gitlab.tiker.net/inducer/boxtree@timing-data
 git+https://github.com/inducer/pymbolic
 git+https://github.com/inducer/loopy