diff --git a/benchmarks/ecal_gaps/requirements.txt b/benchmarks/ecal_gaps/requirements.txt
index dc376fe..f0134c8 100644
--- a/benchmarks/ecal_gaps/requirements.txt
+++ b/benchmarks/ecal_gaps/requirements.txt
@@ -1,7 +1,8 @@
 awkward >= 2.4.0
 dask >= 2023
-dask_awkward
-dask_histogram
+# https://github.com/dask-contrib/dask-histogram/issues/155
+dask_awkward < 2024.12.0, >= 2025
+dask_histogram < 2024.12.0, >= 2025
 distributed >= 2023
 pyhepmc
 uproot ~= 5.2.0