diff --git a/math/clad/Makefile b/math/clad/Makefile
index 1124df4daad1..4187543719d6 100644
--- a/math/clad/Makefile
+++ b/math/clad/Makefile
@@ -1,41 +1,40 @@
 PORTNAME=	clad
 DISTVERSIONPREFIX=	v
-DISTVERSION=	1.4
-PORTREVISION=	1
+DISTVERSION=	1.5
 CATEGORIES=	math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Automatic differentiation for C/C++
 WWW=		https://github.com/vgvassilev/clad
 
 LICENSE=	LGPL3
 LICENSE_FILE=	${WRKSRC}/License.txt
 
 TEST_DEPENDS=	kokkos>0:devel/kokkos
 
 USES=		cmake:testing llvm:16,build,run localbase
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	vgvassilev
 
 CMAKE_ARGS=	-DClang_DIR=${LLVM_PREFIX}/lib/cmake/clang \
 		-DLLVM_DIR=${LLVM_PREFIX}/lib/cmake/llvm \
 		-DLLVM_EXTERNAL_LIT=${LLVM_PREFIX}/bin/llvm-lit
 CMAKE_ON=	BUILD_SHARED_LIBS
 CMAKE_TESTING_ON=	FREEBSD_BUILD_TESTS FREEBSD_BUILD_DEMOS
 CMAKE_TESTING_TARGET=	check-clad
 
 #CXXFLAGS+=	-D_OPENMP
 
 post-patch:
 	@${REINPLACE_CMD} \
 		-e ' \
 			s|import lit|&${LLVM_VERSION}|; \
 			s|lit\.|lit${LLVM_VERSION}.| \
 		' \
 		${WRKSRC}/test/lit.cfg
 
 # tests fail to compile: https://github.com/vgvassilev/clad/issues/798
 
 .include <bsd.port.mk>
diff --git a/math/clad/distinfo b/math/clad/distinfo
index f392eca1a1cf..73891ddb2e0f 100644
--- a/math/clad/distinfo
+++ b/math/clad/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1709605257
-SHA256 (vgvassilev-clad-v1.4_GH0.tar.gz) = da5584159499b05d77cfca40baee5d4d212beb269637736fee34d84d2b82d419
-SIZE (vgvassilev-clad-v1.4_GH0.tar.gz) = 969136
+TIMESTAMP = 1716351065
+SHA256 (vgvassilev-clad-v1.5_GH0.tar.gz) = fa044d8a161cbe3ed4e97df0e7ab2b1064a7f3fce7593f0a5d583f4bd866bf90
+SIZE (vgvassilev-clad-v1.5_GH0.tar.gz) = 1030298
diff --git a/math/clad/files/patch-CMakeLists.txt b/math/clad/files/patch-CMakeLists.txt
index 609c98a7523d..a253419c073d 100644
--- a/math/clad/files/patch-CMakeLists.txt
+++ b/math/clad/files/patch-CMakeLists.txt
@@ -1,17 +1,24 @@
---- CMakeLists.txt.orig	2024-02-29 15:28:44 UTC
+--- CMakeLists.txt.orig	2024-05-21 05:35:52 UTC
 +++ CMakeLists.txt
-@@ -309,10 +309,14 @@ if (NOT CLAD_BUILD_STATIC_ONLY)
+@@ -317,8 +317,10 @@ if (NOT CLAD_BUILD_STATIC_ONLY)
+     include(GoogleBenchmark)
+   endif(CLAD_ENABLE_BENCHMARKS)
+ 
++  if (FREEBSD_BUILD_DEMOS)
+   add_subdirectory(demos/ErrorEstimation/CustomModel)
+   add_subdirectory(demos/ErrorEstimation/PrintModel)
++  endif()
+ 
+   # Change the default compiler to the clang which we run clad upon. Our unittests
+   # need to use a supported by clad compiler. Note that's a huge hack and it is
+@@ -331,8 +333,10 @@ if (NOT CLAD_BUILD_STATIC_ONLY)
    string(REPLACE "-fno-lifetime-dse" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
    string(REPLACE "-Wno-class-memaccess" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
  
 +  if (FREEBSD_BUILD_TESTS)
    add_subdirectory(unittests)
    add_subdirectory(test)
 +  endif()
-+  if (FREEBSD_BUILD_DEMOS)
-   add_subdirectory(demos/ErrorEstimation/CustomModel)
-   add_subdirectory(demos/ErrorEstimation/PrintModel)
-+  endif()
  
    # Add benchmarking infrastructure.
    if (CLAD_ENABLE_BENCHMARKS)
diff --git a/math/clad/pkg-plist b/math/clad/pkg-plist
index 625e53524eda..af7a92cc2b72 100644
--- a/math/clad/pkg-plist
+++ b/math/clad/pkg-plist
@@ -1,37 +1,40 @@
 include/clad/Differentiator/Array.h
 include/clad/Differentiator/ArrayExpression.h
 include/clad/Differentiator/ArrayRef.h
 include/clad/Differentiator/BaseForwardModeVisitor.h
 include/clad/Differentiator/BuiltinDerivatives.h
 include/clad/Differentiator/CladConfig.h
 include/clad/Differentiator/CladUtils.h
 include/clad/Differentiator/Compatibility.h
 include/clad/Differentiator/DerivativeBuilder.h
+include/clad/Differentiator/DerivedFnCollector.h
+include/clad/Differentiator/DerivedFnInfo.h
 include/clad/Differentiator/DiffMode.h
 include/clad/Differentiator/DiffPlanner.h
 include/clad/Differentiator/Differentiator.h
+include/clad/Differentiator/DynamicGraph.h
 include/clad/Differentiator/ErrorEstimator.h
 include/clad/Differentiator/EstimationModel.h
 include/clad/Differentiator/ExternalRMVSource.h
 include/clad/Differentiator/FunctionTraits.h
 include/clad/Differentiator/HessianModeVisitor.h
 include/clad/Differentiator/JacobianModeVisitor.h
 include/clad/Differentiator/Matrix.h
 include/clad/Differentiator/MultiplexExternalRMVSource.h
 include/clad/Differentiator/NumericalDiff.h
 include/clad/Differentiator/ParseDiffArgsTypes.h
 include/clad/Differentiator/PushForwardModeVisitor.h
 include/clad/Differentiator/ReverseModeForwPassVisitor.h
 include/clad/Differentiator/ReverseModeVisitor.h
 include/clad/Differentiator/ReverseModeVisitorDirectionKinds.h
 include/clad/Differentiator/STLBuiltins.h
+include/clad/Differentiator/Sins.h
 include/clad/Differentiator/StmtClone.h
 include/clad/Differentiator/Tape.h
 include/clad/Differentiator/VectorForwardModeVisitor.h
 include/clad/Differentiator/VectorPushForwardModeVisitor.h
 include/clad/Differentiator/Version.h
 include/clad/Differentiator/VisitorBase.h
 include/clad/tools/ClangBackendPlugin.h
 include/clad/tools/ClangPlugin.h
-include/clad/tools/DerivedFnInfo.h
 lib/clad.so