diff --git a/devel/Makefile b/devel/Makefile
index e00669090b0d..2662739e2b58 100644
--- a/devel/Makefile
+++ b/devel/Makefile
@@ -6214,6 +6214,7 @@
     SUBDIR += rubygem-json1
     SUBDIR += rubygem-json_pure
     SUBDIR += rubygem-json_pure1
+    SUBDIR += rubygem-json_schema
     SUBDIR += rubygem-json_schemer
     SUBDIR += rubygem-jsonapi-renderer
     SUBDIR += rubygem-jsonpath
diff --git a/devel/rubygem-json_schema/Makefile b/devel/rubygem-json_schema/Makefile
new file mode 100644
index 000000000000..b735fba62007
--- /dev/null
+++ b/devel/rubygem-json_schema/Makefile
@@ -0,0 +1,20 @@
+# Created by: Stéphane D'Alu <sdalu@sdalu.com>
+# $FreeBSD$
+
+PORTNAME=	json_schema
+PORTVERSION=	0.20.9
+CATEGORIES=	devel rubygems
+MASTER_SITES=	RG
+
+MAINTAINER=	ruby@FreeBSD.org
+COMMENT=	JSON Schema V4 and Hyperschema V4 parser and validator
+
+LICENSE=	MIT
+
+USES=		gem
+USE_RUBY=	yes
+PLIST_FILES=	bin/validate-schema
+
+NO_ARCH=	yes
+
+.include <bsd.port.mk>
diff --git a/devel/rubygem-json_schema/distinfo b/devel/rubygem-json_schema/distinfo
new file mode 100644
index 000000000000..db5908ac7fd1
--- /dev/null
+++ b/devel/rubygem-json_schema/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1608252192
+SHA256 (rubygem/json_schema-0.20.9.gem) = 2ccb9054df9cdbb9b46c89fd7be482108811e080ee32ccef59047d7b2a3dae1d
+SIZE (rubygem/json_schema-0.20.9.gem) = 37376
diff --git a/devel/rubygem-json_schema/pkg-descr b/devel/rubygem-json_schema/pkg-descr
new file mode 100644
index 000000000000..80ebb31e9790
--- /dev/null
+++ b/devel/rubygem-json_schema/pkg-descr
@@ -0,0 +1,3 @@
+A JSON Schema V4 and Hyperschema V4 parser and validator.
+
+WWW: https://github.com/brandur/json_schema