diff --git a/misc/quantum++/Makefile b/misc/quantum++/Makefile
index f8d668a68f01..dd1387565e01 100644
--- a/misc/quantum++/Makefile
+++ b/misc/quantum++/Makefile
@@ -1,29 +1,33 @@
 PORTNAME=	quantum++
 DISTVERSIONPREFIX=	v
-DISTVERSION=	5.1
+DISTVERSION=	6.0
 CATEGORIES=	misc devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ header-only general purpose quantum computing library
 WWW=		https://github.com/softwareQinc/qpp
 
 LICENSE=	MIT
-LICENSE_FILE=	${WRKSRC}/LICENSE
+LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 TEST_DEPENDS=	googletest>0:devel/googletest
 
 USES=		cmake:testing compiler:c++17-lang eigen:3,build,run localbase:ldflags
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	softwareQinc
 GH_PROJECT=	qpp
 
 CMAKE_TESTING_TARGET=	unit_tests
 
 NO_BUILD=	yes
 NO_ARCH=	yes
 
 post-test: # run tests
 	@${BUILD_WRKSRC}/unit_tests/unit_tests
 
+# tests as of 6.0:
+# [==========] 457 tests from 325 test suites ran. (1585 ms total)
+# [  PASSED  ] 457 tests.
+
 .include <bsd.port.mk>
diff --git a/misc/quantum++/distinfo b/misc/quantum++/distinfo
index 5612644d3d2c..1d3b97aef1da 100644
--- a/misc/quantum++/distinfo
+++ b/misc/quantum++/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1709581435
-SHA256 (softwareQinc-qpp-v5.1_GH0.tar.gz) = ba7bb00c654e244af6f3b6d115a417688b21a5fa63e20203a7cd3ad9349cfecf
-SIZE (softwareQinc-qpp-v5.1_GH0.tar.gz) = 4700535
+TIMESTAMP = 1762708806
+SHA256 (softwareQinc-qpp-v6.0_GH0.tar.gz) = cdd6acf287b2f2dd124120ef2aba85660eee9482f5484dbd229c93b53a7d8a54
+SIZE (softwareQinc-qpp-v6.0_GH0.tar.gz) = 4717610
diff --git a/misc/quantum++/pkg-plist b/misc/quantum++/pkg-plist
index 50416f420f24..aee276d602b3 100644
--- a/misc/quantum++/pkg-plist
+++ b/misc/quantum++/pkg-plist
@@ -1,64 +1,71 @@
 include/qpp/qasmtools/ast/ast.hpp
 include/qpp/qasmtools/ast/base.hpp
 include/qpp/qasmtools/ast/cloneable.hpp
 include/qpp/qasmtools/ast/decl.hpp
 include/qpp/qasmtools/ast/expr.hpp
 include/qpp/qasmtools/ast/program.hpp
 include/qpp/qasmtools/ast/replacer.hpp
 include/qpp/qasmtools/ast/semantic.hpp
 include/qpp/qasmtools/ast/stmt.hpp
 include/qpp/qasmtools/ast/traversal.hpp
 include/qpp/qasmtools/ast/var.hpp
 include/qpp/qasmtools/ast/visitor.hpp
 include/qpp/qasmtools/parser/lexer.hpp
 include/qpp/qasmtools/parser/parser.hpp
 include/qpp/qasmtools/parser/position.hpp
 include/qpp/qasmtools/parser/preprocessor.hpp
 include/qpp/qasmtools/parser/token.hpp
 include/qpp/qasmtools/tools/ast_printer.hpp
 include/qpp/qasmtools/utils/angle.hpp
 include/qpp/qasmtools/utils/templates.hpp
 include/qpp/qpp/MATLAB/matlab.hpp
 include/qpp/qpp/classes/codes.hpp
 include/qpp/qpp/classes/exception.hpp
 include/qpp/qpp/classes/gates.hpp
 include/qpp/qpp/classes/idisplay.hpp
 include/qpp/qpp/classes/ijson.hpp
 include/qpp/qpp/classes/init.hpp
 include/qpp/qpp/classes/layouts.hpp
 include/qpp/qpp/classes/noise.hpp
 include/qpp/qpp/classes/qbase_engine.hpp
 include/qpp/qpp/classes/qcircuit.hpp
 include/qpp/qpp/classes/qcircuit_traits.hpp
 include/qpp/qpp/classes/qdummy_engine.hpp
 include/qpp/qpp/classes/qengine.hpp
 include/qpp/qpp/classes/qengine_traits.hpp
 include/qpp/qpp/classes/qnoisy_engine.hpp
 include/qpp/qpp/classes/random_devices.hpp
 include/qpp/qpp/classes/reversible.hpp
 include/qpp/qpp/classes/states.hpp
 include/qpp/qpp/classes/timer.hpp
 include/qpp/qpp/constants.hpp
 include/qpp/qpp/entanglement.hpp
 include/qpp/qpp/entropies.hpp
 include/qpp/qpp/experimental/experimental.hpp
 include/qpp/qpp/functions.hpp
 include/qpp/qpp/input_output.hpp
 include/qpp/qpp/instruments.hpp
 include/qpp/qpp/internal/classes/iomanip.hpp
+include/qpp/qpp/internal/classes/qcircuit_conditional_step.hpp
+include/qpp/qpp/internal/classes/qcircuit_gate_step.hpp
+include/qpp/qpp/internal/classes/qcircuit_measurement_step.hpp
+include/qpp/qpp/internal/classes/qcircuit_nop_step.hpp
+include/qpp/qpp/internal/classes/qcircuit_resources.hpp
+include/qpp/qpp/internal/classes/qengine_state.hpp
+include/qpp/qpp/internal/classes/qengine_statistics.hpp
 include/qpp/qpp/internal/classes/singleton.hpp
 include/qpp/qpp/internal/util.hpp
 include/qpp/qpp/number_theory.hpp
 include/qpp/qpp/operations.hpp
 include/qpp/qpp/options.hpp
 include/qpp/qpp/qasm/qasm.hpp
-include/qpp/qpp/qpp.h
+include/qpp/qpp/qpp.hpp
 include/qpp/qpp/random.hpp
 include/qpp/qpp/statistics.hpp
 include/qpp/qpp/traits.hpp
 include/qpp/qpp/types.hpp
 lib/cmake/qpp/qppConfig.cmake
 lib/cmake/qpp/qpp_MATLAB.cmake
 lib/cmake/qpp/qpp_dependencies.cmake
 lib/cmake/qpp/qpp_eigen3.cmake
 lib/cmake/qpp/qpp_targets.cmake