diff --git a/src/StatesZoo/StatesZoo.jl b/src/StatesZoo/StatesZoo.jl
index fd1629a2..2c87d15a 100644
--- a/src/StatesZoo/StatesZoo.jl
+++ b/src/StatesZoo/StatesZoo.jl
@@ -1,5 +1,6 @@
 module StatesZoo
 
+using DocStringExtensions
 using QuantumSymbolics, QuantumOpticsBase
 using QuantumSymbolics: withmetadata, @withmetadata, Metadata
 import QuantumSymbolics: express_nolookup