diff --git a/lexicons/pipeline/pipeline.json b/lexicons/pipeline/pipeline.json
index 9c1138b565..5a756302a3 100644
--- a/lexicons/pipeline/pipeline.json
+++ b/lexicons/pipeline/pipeline.json
@@ -151,7 +151,7 @@
         "name",
         "engine",
         "clone",
-        "raw"
+        "rest"
       ],
       "properties": {
         "name": {
@@ -164,8 +164,12 @@
           "type": "ref",
           "ref": "#cloneOpts"
         },
-        "raw": {
-          "type": "string"
+        "rest": {
+          "type": "union",
+          "closed": false,
+          "refs": [
+            "#nixeryWorkflowFields"
+          ]
         }
       }
     },
@@ -202,6 +206,78 @@
           "type": "string"
         }
       }
+    },
+    "commandStep": {
+      "type": "object",
+      "required": [
+        "name",
+        "command"
+      ],
+      "properties": {
+        "name": {
+          "type": "string"
+        },
+        "command": {
+          "type": "string"
+        },
+        "environment": {
+          "type": "array",
+          "items": {
+            "type": "ref",
+            "ref": "#pair"
+          }
+        }
+      }
+    },
+
+    "nixeryWorkflowFields": {
+      "type": "object",
+      "required": [
+        "dependencies",
+        "steps",
+        "environment"
+      ],
+      "properties": {
+        "dependencies": {
+          "type": "array",
+          "items": {
+            "type": "ref",
+            "ref": "#nixeryDependency"
+          }
+        },
+        "steps": {
+          "type": "array",
+          "items": {
+            "type": "ref",
+            "ref": "#commandStep"
+          }
+        },
+        "environment": {
+          "type": "array",
+          "items": {
+            "type": "ref",
+            "ref": "#pair"
+          }
+        }
+      }
+    },
+    "nixeryDependency": {
+      "type": "object",
+      "required": [
+        "registry",
+        "packages"
+      ],
+      "properties": {
+        "registry": {
+          "type": "string"
+        },
+        "packages": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      }
     }
   }
 }