diff --git a/misc/opennn/Makefile b/misc/opennn/Makefile
index a48d5e4a8f5e..53724a28b276 100644
--- a/misc/opennn/Makefile
+++ b/misc/opennn/Makefile
@@ -1,49 +1,53 @@
 PORTNAME=	opennn
 DISTVERSIONPREFIX=	v
-DISTVERSION=	6.0.4
+DISTVERSION=	8.0.0
 CATEGORIES=	misc # machine-learning
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Open neural networks library
-WWW=		https://www.opennn.net/
+WWW=		https://www.opennn.net/ \
+		https://github.com/Artelnics/opennn
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 BROKEN_armv7=	gcc13 fails: error: use of built-in trait '__remove_cvref(_InIter1)' in function signature, see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278630
 
-USES=		cmake:testing dos2unix
+TEST_DEPENDS=	googletest>0:devel/googletest
+
+USES=		cmake:testing dos2unix localbase:ldflags
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	Artelnics
 
 DOS2UNIX_FILES=	opennn/CMakeLists.txt
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 CMAKE_OFF=	OpenNN_BUILD_EXAMPLES OpenNN_BUILD_TESTS
+CMAKE_OFF+=	OPENNN_WITH_CUDA
 CMAKE_TESTING_ON=	OpenNN_BUILD_TESTS # some tests fail, see https://github.com/Artelnics/opennn/issues/229
-CMAKE_TESTING_TARGET=	tests
+CMAKE_TESTING_TARGET=
 
 CXXFLAGS_powerpc=	-O1
 CXXFLAGS_powerpc64=	-mvsx
 LDFLAGS+=	-pthread
 LDFLAGS_powerpc=	-latomic
 
 .if !exists(/usr/include/omp.h)
 LDFLAGS+=	-fopenmp
 USES+=		compiler:gcc-c++11-lib
 .else
 LDFLAGS+=	-lomp # https://github.com/Artelnics/opennn/issues/182
 USES+=		compiler:c++11-lang
 .endif
 
 do-install:
 	${MKDIR} ${STAGEDIR}${PREFIX}/include/${PORTNAME} && ${INSTALL_DATA} ${WRKSRC}/${PORTNAME}/*.h ${STAGEDIR}${PREFIX}/include/${PORTNAME}
 	${INSTALL_DATA} ${BUILD_WRKSRC}/${PORTNAME}/libopennn.so ${STAGEDIR}${PREFIX}/lib
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libopennn.so
 
 post-test:
-	@cd ${TEST_WRKSRC} && (${ECHO} suite | tests/tests)
+	@cd ${TEST_WRKSRC} && ${BUILD_WRKSRC}/bin/run_tests
 
 .include <bsd.port.mk>
diff --git a/misc/opennn/distinfo b/misc/opennn/distinfo
index 35a32c537960..b310c8e83e07 100644
--- a/misc/opennn/distinfo
+++ b/misc/opennn/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1687057825
-SHA256 (Artelnics-opennn-v6.0.4_GH0.tar.gz) = 3f3bcf491198444d58ea099acf69b3a4e3703b321f3fb08ad9b32e832b400c34
-SIZE (Artelnics-opennn-v6.0.4_GH0.tar.gz) = 20311311
+TIMESTAMP = 1775624253
+SHA256 (Artelnics-opennn-v8.0.0_GH0.tar.gz) = 3f2326b4a85cc2c388baf00107a340ee91104ef5b8d7fa83b6add555e7d9ea90
+SIZE (Artelnics-opennn-v8.0.0_GH0.tar.gz) = 71452501
diff --git a/misc/opennn/files/patch-opennn_CMakeLists.txt b/misc/opennn/files/patch-opennn_CMakeLists.txt
new file mode 100644
index 000000000000..16c74d1572da
--- /dev/null
+++ b/misc/opennn/files/patch-opennn_CMakeLists.txt
@@ -0,0 +1,18 @@
+--- opennn/CMakeLists.txt.orig	2026-04-08 05:34:55 UTC
++++ opennn/CMakeLists.txt
+@@ -5,7 +5,7 @@ file(GLOB_RECURSE HEADER_FILES CONFIGURE_DEPENDS "*.h"
+ file(GLOB_RECURSE CPP_SOURCES CONFIGURE_DEPENDS "*.cpp")
+ file(GLOB_RECURSE HEADER_FILES CONFIGURE_DEPENDS "*.h")
+ 
+-add_library(opennn STATIC ${CPP_SOURCES} ${HEADER_FILES})
++add_library(opennn ${CPP_SOURCES} ${HEADER_FILES})
+ 
+ # Force linker to include all object files so that REGISTER() auto-registration
+ # in anonymous namespaces is not stripped from the final binary.
+@@ -52,4 +52,4 @@ target_compile_options(opennn PRIVATE
+ target_compile_options(opennn PRIVATE
+     $<$<CONFIG:DEBUG>:-O0 -g>
+     $<$<NOT:$<CONFIG:DEBUG>>:-O2>
+-)
+\ No newline at end of file
++)
diff --git a/misc/opennn/files/patch-opennn_data__set.h b/misc/opennn/files/patch-opennn_data__set.h
deleted file mode 100644
index a784d1fe923b..000000000000
--- a/misc/opennn/files/patch-opennn_data__set.h
+++ /dev/null
@@ -1,11 +0,0 @@
---- opennn/data_set.h.orig	2023-06-18 03:33:58 UTC
-+++ opennn/data_set.h
-@@ -30,7 +30,7 @@
- #include <limits.h>
- #include <list>
- #include <filesystem>
--#include <experimental/filesystem>
-+//#include <experimental/filesystem>
- 
- #include <regex>
- #include <codecvt>
diff --git a/misc/opennn/files/patch-opennn_pch.h b/misc/opennn/files/patch-opennn_pch.h
new file mode 100644
index 000000000000..dc5d7f8488fe
--- /dev/null
+++ b/misc/opennn/files/patch-opennn_pch.h
@@ -0,0 +1,11 @@
+--- opennn/pch.h.orig	2026-04-08 05:32:16 UTC
++++ opennn/pch.h
+@@ -55,7 +55,7 @@
+ #include "../eigen/unsupported/Eigen/CXX11/Tensor"
+ #include "../eigen/Eigen/src/Core/util/DisableStupidWarnings.h"
+ 
+-#define OPENNN_CUDA // Comment this line to disable cuda files
++//#define OPENNN_CUDA // Comment this line to disable cuda files
+ 
+ #ifdef OPENNN_CUDA
+ 
diff --git a/misc/opennn/pkg-plist b/misc/opennn/pkg-plist
index e18361a58466..f99796547d24 100644
--- a/misc/opennn/pkg-plist
+++ b/misc/opennn/pkg-plist
@@ -1,59 +1,56 @@
 include/opennn/adaptive_moment_estimation.h
-include/opennn/batch_normalization_layer.h
-include/opennn/bounding_box_regressor_layer.h
+include/opennn/addition_layer.h
 include/opennn/bounding_layer.h
-include/opennn/codification.h
-include/opennn/config.h
-include/opennn/conjugate_gradient.h
 include/opennn/convolutional_layer.h
 include/opennn/correlations.h
 include/opennn/cross_entropy_error.h
-include/opennn/data_set.h
-include/opennn/filesystem.h
+include/opennn/cross_entropy_error_3d.h
+include/opennn/dataset.h
+include/opennn/dense_layer.h
+include/opennn/embedding_layer.h
 include/opennn/flatten_layer.h
 include/opennn/genetic_algorithm.h
-include/opennn/gradient_descent.h
 include/opennn/growing_inputs.h
 include/opennn/growing_neurons.h
+include/opennn/image_dataset.h
+include/opennn/image_utilities.h
 include/opennn/inputs_selection.h
-include/opennn/json_to_xml.h
+include/opennn/kmeans.h
+include/opennn/language_dataset.h
 include/opennn/layer.h
-include/opennn/learning_rate_algorithm.h
 include/opennn/levenberg_marquardt_algorithm.h
-include/opennn/long_short_term_memory_layer.h
-include/opennn/loss_index.h
+include/opennn/loss.h
 include/opennn/mean_squared_error.h
 include/opennn/minkowski_error.h
+include/opennn/model_expression.h
 include/opennn/model_selection.h
+include/opennn/multihead_attention_layer.h
 include/opennn/neural_network.h
-include/opennn/neurons_selection.h
-include/opennn/non_max_suppression_layer.h
+include/opennn/neuron_selection.h
+include/opennn/normalization_layer_3d.h
 include/opennn/normalized_squared_error.h
-include/opennn/numerical_differentiation.h
 include/opennn/opennn.h
-include/opennn/opennn_images.h
-include/opennn/opennn_strings.h
-include/opennn/optimization_algorithm.h
-include/opennn/perceptron_layer.h
+include/opennn/optimizer.h
+include/opennn/pch.h
 include/opennn/pooling_layer.h
-include/opennn/probabilistic_layer.h
-include/opennn/pruning_inputs.h
+include/opennn/pooling_layer_3d.h
 include/opennn/quasi_newton_method.h
+include/opennn/random_utilities.h
 include/opennn/recurrent_layer.h
-include/opennn/region_based_object_detector.h
-include/opennn/region_proposal_layer.h
+include/opennn/registry.h
 include/opennn/response_optimization.h
 include/opennn/scaling.h
 include/opennn/scaling_layer.h
+include/opennn/standard_networks.h
 include/opennn/statistics.h
 include/opennn/stochastic_gradient_descent.h
-include/opennn/sum_squared_error.h
+include/opennn/string_utilities.h
 include/opennn/tensor_utilities.h
 include/opennn/testing_analysis.h
-include/opennn/text_analytics.h
+include/opennn/time_series_dataset.h
 include/opennn/tinyxml2.h
 include/opennn/training_strategy.h
-include/opennn/unit_testing.h
 include/opennn/unscaling_layer.h
+include/opennn/variable.h
 include/opennn/weighted_squared_error.h
 lib/libopennn.so