diff --git a/pyinstaller.spec b/pyinstaller.spec
index 7e62d14..43575c8 100644
--- a/pyinstaller.spec
+++ b/pyinstaller.spec
@@ -31,6 +31,7 @@ for file_path in file_list:
     module_name = file_name.replace(".py", "")
     hidden_imports.append("cqcodecs." + module_name)
 hidden_imports.append('OCP')
+hidden_imports.append('casadi')
 hidden_imports.append('typing_extensions')
 hidden_imports.append('pyparsing')
 hidden_imports.append('ezdxf')