diff --git a/q2_viromics/plugin_setup.py b/q2_viromics/plugin_setup.py
index 1ac6c70..d82d41f 100644
--- a/q2_viromics/plugin_setup.py
+++ b/q2_viromics/plugin_setup.py
@@ -9,7 +9,7 @@
 
 from q2_types.per_sample_sequences import Contigs
 from q2_types.sample_data import SampleData
-from qiime2.plugin import Bool, Citations, Float, Int, Plugin, Range
+from qiime2.plugin import Citations, Int, Plugin, Range
 
 import q2_viromics