diff --git a/.github/workflows/workflow-docker.yaml b/.github/workflows/workflow-docker.yaml
index 36277b3..2eee5cc 100644
--- a/.github/workflows/workflow-docker.yaml
+++ b/.github/workflows/workflow-docker.yaml
@@ -28,6 +28,7 @@ on:
   push:
     branches:
       - master
+      - mt/env-var-configs
 
 jobs:
   run-workflow:
diff --git a/pyproject.toml b/pyproject.toml
index f65e7f8..980b16a 100755
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,6 +45,8 @@ dependencies = [
     "rcsb.utils.chemref >= 0.98",
     "rcsb.utils.seqalign >= 0.32",
     "rcsb.exdb >= 1.35",
+    # "rcsb.utils.config >= 0.43",
+    "rcsb.utils.config @ git+https://github.com/rcsb/py-rcsb_utils_config.git@mt/env-var-configs",
 ]
 
 [project.optional-dependencies]