diff --git a/__tests__/helpers/github-workflow-schema.json b/__tests__/helpers/github-workflow-schema.json
index fd746836e..a60ccf055 100644
--- a/__tests__/helpers/github-workflow-schema.json
+++ b/__tests__/helpers/github-workflow-schema.json
@@ -363,79 +363,15 @@
         "runs-on": {
           "$comment": "https://help.github.com/en/github/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions#jobsjob_idruns-on",
           "description": "The type of machine to run the job on. The machine can be either a GitHub-hosted runner, or a self-hosted runner.",
-          "oneOf": [
+          "anyOf": [
             {
               "$comment": "https://help.github.com/en/actions/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions#github-hosted-runners",
-              "type": "string",
-              "enum": [
-                "macos-10.15",
-                "macos-11",
-                "macos-12",
-                "macos-12-xl",
-                "macos-13",
-                "macos-13-xl",
-                "macos-latest",
-                "macos-latest-xl",
-                "self-hosted",
-                "ubuntu-18.04",
-                "ubuntu-20.04",
-                "ubuntu-22.04",
-                "ubuntu-latest",
-                "ubuntu-latest-4-cores",
-                "ubuntu-latest-8-cores",
-                "ubuntu-latest-16-cores",
-                "windows-2019",
-                "windows-2022",
-                "windows-latest",
-                "windows-latest-8-cores"
-              ]
+              "type": "string"
             },
             {
               "$comment": "https://help.github.com/en/actions/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions#self-hosted-runners",
               "type": "array",
-              "anyOf": [
-                { "items": [{ "const": "self-hosted" }], "minItems": 1, "additionalItems": { "type": "string" } },
-                {
-                  "items": [{ "const": "self-hosted" }, { "$ref": "#/definitions/machine" }],
-                  "minItems": 2,
-                  "additionalItems": { "type": "string" }
-                },
-                {
-                  "items": [{ "const": "self-hosted" }, { "$ref": "#/definitions/architecture" }],
-                  "minItems": 2,
-                  "additionalItems": { "type": "string" }
-                },
-                {
-                  "items": [
-                    { "const": "self-hosted" },
-                    { "$ref": "#/definitions/machine" },
-                    { "$ref": "#/definitions/architecture" }
-                  ],
-                  "minItems": 3,
-                  "additionalItems": { "type": "string" }
-                },
-                {
-                  "items": [
-                    { "const": "self-hosted" },
-                    { "$ref": "#/definitions/architecture" },
-                    { "$ref": "#/definitions/machine" }
-                  ],
-                  "minItems": 3,
-                  "additionalItems": { "type": "string" }
-                },
-                {
-                  "items": [{ "const": "linux" }],
-                  "minItems": 2,
-                  "maxItems": 2,
-                  "additionalItems": { "type": "string" }
-                },
-                {
-                  "items": [{ "const": "windows" }],
-                  "minItems": 2,
-                  "maxItems": 2,
-                  "additionalItems": { "type": "string" }
-                }
-              ]
+              "anyOf": [{ "items": [{ "type": "string" }], "minItems": 1 }]
             },
             {
               "$comment": "https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#choosing-runners-in-a-group",
@@ -445,7 +381,8 @@
                 "labels": { "oneOf": [{ "type": "string" }, { "type": "array", "items": { "type": "string" } }] }
               }
             },
-            { "$ref": "#/definitions/stringContainingExpressionSyntax" }
+            { "$ref": "#/definitions/stringContainingExpressionSyntax" },
+            { "$ref": "#/definitions/expressionSyntax" }
           ]
         },
         "environment": {