diff --git a/environments/build_conda_pkg.yml b/environments/build_conda_pkg.yml
index 6ca1146706f..dd7d20183e6 100644
--- a/environments/build_conda_pkg.yml
+++ b/environments/build_conda_pkg.yml
@@ -3,3 +3,4 @@ channels:
   - conda-forge
 dependencies:
   - conda-build=25.11.1
+  - conda=26.5.3=*_0 # conda-forge/conda-feedstock/issues/304