diff --git a/devel/py-simsimd/Makefile b/devel/py-simsimd/Makefile
index 9649de886dc8..a4d522ea7024 100644
--- a/devel/py-simsimd/Makefile
+++ b/devel/py-simsimd/Makefile
@@ -1,24 +1,23 @@
 PORTNAME=	simsimd
-DISTVERSION=	6.0.4
-PORTREVISION=	1
+DISTVERSION=	6.5.16
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Portable mixed-precision BLAS-like vector math library for x86 and ARM
 WWW=		https://ashvardanian.com/posts/simsimd-faster-scipy/ \
 		https://github.com/ashvardanian/simsimd
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 ONLY_FOR_ARCHS=	aarch64 amd64 i386
 
 USES=		python
 USE_PYTHON=	distutils autoplist
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PYTHON_SITELIBDIR}/simsimd${PYTHON_TAG}.so
 
 .include <bsd.port.mk>
diff --git a/devel/py-simsimd/distinfo b/devel/py-simsimd/distinfo
index 3868a2d30974..a1f30c15ace6 100644
--- a/devel/py-simsimd/distinfo
+++ b/devel/py-simsimd/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1731471761
-SHA256 (simsimd-6.0.4.tar.gz) = 380d1a2ded222e2d9ceb3b110f18a016d6878db6c6c9b6127e4376151dc38b8b
-SIZE (simsimd-6.0.4.tar.gz) = 156217
+TIMESTAMP = 1785700525
+SHA256 (simsimd-6.5.16.tar.gz) = 0a005c6e2dacec83f235a747f7dbecca46b5d4d1e183ecc1929ca556ee7d7564
+SIZE (simsimd-6.5.16.tar.gz) = 187216
diff --git a/devel/py-simsimd/files/patch-include_simsimd_types.h b/devel/py-simsimd/files/patch-include_simsimd_types.h
new file mode 100644
index 000000000000..063392eb0f73
--- /dev/null
+++ b/devel/py-simsimd/files/patch-include_simsimd_types.h
@@ -0,0 +1,13 @@
+-- fix bug that __bfloat16 isn't defined
+
+--- include/simsimd/types.h.orig	2026-08-02 22:31:43 UTC
++++ include/simsimd/types.h
+@@ -326,6 +326,8 @@ typedef unsigned short simsimd_f16_t;
+ typedef unsigned short simsimd_f16_t;
+ #endif
+ 
++#include <immintrin.h>
++
+ #if !defined(SIMSIMD_NATIVE_BF16) || SIMSIMD_NATIVE_BF16
+ /**
+  *  @brief  Half-precision brain-float type.