diff --git a/requirements.txt b/requirements.txt
index ebc1592..821cbad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,6 +6,7 @@ daiquiri
 datashader
 diskcache
 hvplot
+matplotlib
 msprime
 panel
 pre-commit
diff --git a/tsbrowse/pages/tables.py b/tsbrowse/pages/tables.py
index 2ee5796..5c74ab6 100644
--- a/tsbrowse/pages/tables.py
+++ b/tsbrowse/pages/tables.py
@@ -45,9 +45,7 @@
     ],
     "sites": ["id", "position", "ancestral_state", "num_mutations"],
     "individuals": ["id", "flags", "parents", "location"],
-    "populations": [
-        "id",
-    ],
+    "populations": ["id"],
     "migrations": ["id", "left", "right", "node", "source", "dest", "time"],
     "provenances": ["id", "timestamp", "record"],
 }