diff --git a/devel/double-conversion/Makefile b/devel/double-conversion/Makefile
index 50920d78f1e5..d3581939ee2e 100644
--- a/devel/double-conversion/Makefile
+++ b/devel/double-conversion/Makefile
@@ -1,23 +1,23 @@
 PORTNAME=	double-conversion
 DISTVERSIONPREFIX=	v
-DISTVERSION=	3.3.1
+DISTVERSION=	3.4.0
 CATEGORIES=	devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Binary-decimal and decimal-binary routines for IEEE doubles
 WWW=		https://github.com/google/double-conversion
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		cmake:testing
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	google
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 
-# tests as of 3.3.1: 100% tests passed, 0 tests failed out of 9
+# tests as of 3.4.0: 100% tests passed, 0 tests failed out of 9
 
 .include <bsd.port.mk>
diff --git a/devel/double-conversion/distinfo b/devel/double-conversion/distinfo
index d215a04c2b84..619f9d8c6d19 100644
--- a/devel/double-conversion/distinfo
+++ b/devel/double-conversion/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1739613987
-SHA256 (google-double-conversion-v3.3.1_GH0.tar.gz) = fe54901055c71302dcdc5c3ccbe265a6c191978f3761ce1414d0895d6b0ea90e
-SIZE (google-double-conversion-v3.3.1_GH0.tar.gz) = 7035094
+TIMESTAMP = 1776619300
+SHA256 (google-double-conversion-v3.4.0_GH0.tar.gz) = 42fd4d980ea86426e457b24bdfa835a6f5ad9517ddb01cdb42b99ab9c8dd5dc9
+SIZE (google-double-conversion-v3.4.0_GH0.tar.gz) = 7035722
diff --git a/devel/double-conversion/pkg-plist b/devel/double-conversion/pkg-plist
index 62d27a5883f8..30b070a2590d 100644
--- a/devel/double-conversion/pkg-plist
+++ b/devel/double-conversion/pkg-plist
@@ -1,19 +1,20 @@
 include/double-conversion/bignum-dtoa.h
 include/double-conversion/bignum.h
 include/double-conversion/cached-powers.h
 include/double-conversion/diy-fp.h
 include/double-conversion/double-conversion.h
 include/double-conversion/double-to-string.h
 include/double-conversion/fast-dtoa.h
 include/double-conversion/fixed-dtoa.h
 include/double-conversion/ieee.h
 include/double-conversion/string-to-double.h
 include/double-conversion/strtod.h
 include/double-conversion/utils.h
 lib/cmake/double-conversion/double-conversionConfig.cmake
 lib/cmake/double-conversion/double-conversionConfigVersion.cmake
 lib/cmake/double-conversion/double-conversionTargets-%%CMAKE_BUILD_TYPE%%.cmake
 lib/cmake/double-conversion/double-conversionTargets.cmake
 lib/libdouble-conversion.so
 lib/libdouble-conversion.so.3
-lib/libdouble-conversion.so.3.3.0
+lib/libdouble-conversion.so.3.4.0
+libdata/pkgconfig/double-conversion.pc