diff --git a/bin/multisample_plot.py b/bin/multisample_plot.py
index c3e72d4..dc59af5 100755
--- a/bin/multisample_plot.py
+++ b/bin/multisample_plot.py
@@ -4,6 +4,7 @@
 # dependencies = [
 #     "plotnine",
 #     "polars",
+#     "pyarrow",
 # ]
 # ///
 
diff --git a/bin/plot_coverage.py b/bin/plot_coverage.py
index cfaa99d..bb8252e 100755
--- a/bin/plot_coverage.py
+++ b/bin/plot_coverage.py
@@ -4,6 +4,7 @@
 # dependencies = [
 #     "plotnine",
 #     "polars",
+#     "pyarrow",
 # ]
 # ///
 
diff --git a/pixi.lock b/pixi.lock
index 22f2df9..cfa2fc5 100644
--- a/pixi.lock
+++ b/pixi.lock
@@ -5445,7 +5445,7 @@ packages:
   name: oneroof
   version: 0.1.0
   path: .
-  sha256: cbd9331f06cffdadbc4a07e10c5464cc10293c8fb8faa80c0539592582bcae79
+  sha256: c5a644564710c346d49869d932c51cb61c6544286c0e463a75a8ea72875a9a40
   requires_dist:
   - polars-lts-cpu
   - xlsxwriter