diff --git a/srcpkgs/json-c++/template b/srcpkgs/json-c++/template
index 1a56960566..7a0cae0649 100644
--- a/srcpkgs/json-c++/template
+++ b/srcpkgs/json-c++/template
@@ -1,6 +1,6 @@
 # Template file for 'json-c++'
 pkgname=json-c++
-version=3.3.0
+version=3.4.0
 revision=1
 wrksrc="json-${version}"
 build_style=cmake
@@ -9,7 +9,7 @@ maintainer="Jürgen Buchmüller <pullmoll@t-online.de>"
 license="MIT"
 homepage="https://github.com/nlohmann/json"
 distfiles="https://github.com/nlohmann/json/archive/v${version}.tar.gz"
-checksum=2fd1d207b4669a7843296c41d3b6ac5b23d00dec48dba507ba051d14564aa801
+checksum=c377963a95989270c943d522bfefe7b889ef5ed0e1e15d535fd6f6f16ed70732
 
 post_install() {
 	vlicense LICENSE.MIT