diff --git a/docs/build_api.py b/docs/build_api.py
index 8d2c626..a19cdb8 100644
--- a/docs/build_api.py
+++ b/docs/build_api.py
@@ -168,7 +168,6 @@ def build_index_page(groups):
             "ceil",
             "cos",
             "cosh",
-            "cospi",
             "erf",
             "erfc",
             "erfcinv",