diff --git a/src/go.ts b/src/go.ts
index 3d48fb6a67a1..a523ff2ed72b 100644
--- a/src/go.ts
+++ b/src/go.ts
@@ -675,6 +675,14 @@ const completionSpec: Fig.Spec = {
               name: "-v",
               description: "Print information about removed modules",
             },
+            {
+              name: "-o",
+              description:
+                'Create the vendor directory at the given path instead of "vendor". The go command can only use a vendor directory named "vendor" within the module root directory, so this flag is primarily useful for other tools',
+              args: {
+                name: "outdir",
+              },
+            },
           ],
         },
         {
@@ -800,6 +808,30 @@ const completionSpec: Fig.Spec = {
             isVariadic: true,
           },
         },
+        {
+          name: "vendor",
+          description:
+            "Construct a directory named vendor in the workspace's root directory",
+          options: [
+            {
+              name: "-e",
+              description:
+                "Attempt to proceed despite errors encountered while loading packages",
+            },
+            {
+              name: "-v",
+              description: "Print information about removed modules",
+            },
+            {
+              name: "-o",
+              description:
+                'Create the vendor directory at the given path instead of "vendor". The go command can only use a vendor directory named "vendor" within the module root directory, so this flag is primarily useful for other tools',
+              args: {
+                name: "outdir",
+              },
+            },
+          ],
+        },
       ],
     },
     {