diff --git a/math/py-pytanque/files/patch-include_pa_exprs.h b/math/py-pytanque/files/patch-include_pa_exprs.h
new file mode 100644
index 000000000000..b6afeb76fa83
--- /dev/null
+++ b/math/py-pytanque/files/patch-include_pa_exprs.h
@@ -0,0 +1,24 @@
+--- Fix build on 16.
+--- Specialization of std::is_pod is no longer allowed in modern C++.
+--- std::is_pod was deprecated in C++20 and specializations are now prohibited.
+--- The specialization is not necessary for the code to function correctly.
+--- This fixes the build error on FreeBSD 16 with newer clang/libc++.
+--- Error: 'is_pod' cannot be specialized: Users are not allowed to specialize this standard library entity
+
+--- include/pa/exprs.h.orig	2020-03-28 00:00:00 UTC
++++ include/pa/exprs.h
+@@ -40,14 +40,7 @@ namespace pa {
+ class Expr;
+ }
+ 
+-namespace std {
+ 
+-template <>
+-struct is_pod<pa::Expr>: public std::false_type
+-{ };
+-
+-}
+-
+ namespace pa {
+ 
+ enum class expr_type_id: unsigned char {