diff --git a/kiwixbuild/dependencies/kiwix_tools.py b/kiwixbuild/dependencies/kiwix_tools.py
index 615b749..c2fee18 100644
--- a/kiwixbuild/dependencies/kiwix_tools.py
+++ b/kiwixbuild/dependencies/kiwix_tools.py
@@ -10,7 +10,7 @@ class KiwixTools(Dependency):
         git_dir = "kiwix-tools"
 
     class Builder(MesonBuilder):
-        dependencies = ["libkiwix"]
+        dependencies = ["libkiwix", "docoptcpp"]
 
         @property
         def configure_options(self):