diff --git a/src/rules/no-unsafe-values.js b/src/rules/no-unsafe-values.js
index 75007d4..3a7931b 100644
--- a/src/rules/no-unsafe-values.js
+++ b/src/rules/no-unsafe-values.js
@@ -127,6 +127,15 @@ export default /** @satisfies {NoUnsafeValuesRuleDefinition} */ ({
 					}
 				}
 			},
+			Infinity(node) {
+				const value = context.sourceCode.getText(node);
+
+				context.report({
+					loc: node.loc,
+					messageId: "unsafeNumber",
+					data: { value },
+				});
+			},
 			String(node) {
 				if (node.value.isWellFormed) {
 					if (node.value.isWellFormed()) {
diff --git a/tests/rules/no-unsafe-values.test.js b/tests/rules/no-unsafe-values.test.js
index 93e9f6c..4374d8f 100644
--- a/tests/rules/no-unsafe-values.test.js
+++ b/tests/rules/no-unsafe-values.test.js
@@ -106,6 +106,38 @@ ruleTester.run("no-unsafe-values", rule, {
 				},
 			],
 		},
+		{
+			code: "Infinity",
+			language: "json/json5",
+			errors: [
+				{
+					messageId: "unsafeNumber",
+					data: {
+						value: "Infinity",
+					},
+					line: 1,
+					column: 1,
+					endLine: 1,
+					endColumn: 9,
+				},
+			],
+		},
+		{
+			code: "-Infinity",
+			language: "json/json5",
+			errors: [
+				{
+					messageId: "unsafeNumber",
+					data: {
+						value: "-Infinity",
+					},
+					line: 1,
+					column: 1,
+					endLine: 1,
+					endColumn: 10,
+				},
+			],
+		},
 		{
 			code: '"\ud83d"',
 			errors: [