diff --git a/pyproject.toml b/pyproject.toml
index 8def06a..de7aa3e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,10 @@ dependencies = [
     "pyyaml==6.0.3",
     "requests==2.32.5",
     "cotdata>=0.1.0",
-    "marketdata>=0.1.0",       # bars; ADR-0007 moved them out of cotdata
+    # Bars; ADR-0007 moved them out of cotdata. The DISTRIBUTION is
+    # crucible-marketdata (`marketdata` on PyPI is an unrelated abandoned
+    # project); the IMPORT that cotmetrics uses is still `marketdata`.
+    "crucible-marketdata>=0.1.0",
     "cotmetrics[options]>=0.3.0",
 ]
 
diff --git a/scripts/check_dep_floors.py b/scripts/check_dep_floors.py
index e5956cb..ebddb93 100644
--- a/scripts/check_dep_floors.py
+++ b/scripts/check_dep_floors.py
@@ -31,7 +31,7 @@
 # rather than a package index, so only these need the extra check.
 INTERNAL = {
     "cotdata",
-    "marketdata",
+    "crucible-marketdata",   # distribution name; the import is `marketdata`
     "cotmetrics",
     "crucible",
     "crucible-stack",