diff --git a/site/src/api/api.test.ts b/site/src/api/api.test.ts
index 70ae81b1297a7..2155888534da2 100644
--- a/site/src/api/api.test.ts
+++ b/site/src/api/api.test.ts
@@ -173,7 +173,12 @@ describe("api.ts", () => {
       expect(api.postWorkspaceBuild).toHaveBeenCalledWith(MockWorkspace.id, {
         transition: "start",
         template_version_id: MockTemplate.active_version_id,
-        rich_parameter_values: [],
+        rich_parameter_values: [
+          {
+            name: "first_parameter",
+            value: "mock-abc",
+          },
+        ],
       })
     })
 
@@ -222,7 +227,12 @@ describe("api.ts", () => {
       expect(api.postWorkspaceBuild).toHaveBeenCalledWith(MockWorkspace.id, {
         transition: "start",
         template_version_id: MockTemplate.active_version_id,
-        rich_parameter_values: [],
+        rich_parameter_values: [
+          {
+            name: "first_parameter",
+            value: "mock-abc",
+          },
+        ],
       })
     })
   })
diff --git a/site/src/api/api.ts b/site/src/api/api.ts
index 73cb6de377dd0..ab4b47f4820d4 100644
--- a/site/src/api/api.ts
+++ b/site/src/api/api.ts
@@ -1041,10 +1041,19 @@ export const updateWorkspace = async (
     throw new MissingBuildParameters(missingParameters)
   }
 
+  // Merge parameters using name as key
+  const richParameterValues = newBuildParameters
+  oldBuildParameters.forEach((oldParam) => {
+    const newParam = richParameterValues.find((p) => p.name === oldParam.name)
+    if (newParam === undefined) {
+      richParameterValues.push(oldParam)
+    }
+  })
+
   return postWorkspaceBuild(workspace.id, {
     transition: "start",
     template_version_id: activeVersionId,
-    rich_parameter_values: newBuildParameters,
+    rich_parameter_values: richParameterValues,
   })
 }
 
diff --git a/site/src/xServices/workspace/workspaceXService.ts b/site/src/xServices/workspace/workspaceXService.ts
index 2188f33d70949..2276c8034a126 100644
--- a/site/src/xServices/workspace/workspaceXService.ts
+++ b/site/src/xServices/workspace/workspaceXService.ts
@@ -117,31 +117,32 @@ export const checks = {
 const permissionsToCheck = (
   workspace: TypesGen.Workspace,
   template: TypesGen.Template,
-) => ({
-  [checks.readWorkspace]: {
-    object: {
-      resource_type: "workspace",
-      resource_id: workspace.id,
-      owner_id: workspace.owner_id,
+) =>
+  ({
+    [checks.readWorkspace]: {
+      object: {
+        resource_type: "workspace",
+        resource_id: workspace.id,
+        owner_id: workspace.owner_id,
+      },
+      action: "read",
     },
-    action: "read",
-  },
-  [checks.updateWorkspace]: {
-    object: {
-      resource_type: "workspace",
-      resource_id: workspace.id,
-      owner_id: workspace.owner_id,
+    [checks.updateWorkspace]: {
+      object: {
+        resource_type: "workspace",
+        resource_id: workspace.id,
+        owner_id: workspace.owner_id,
+      },
+      action: "update",
     },
-    action: "update",
-  },
-  [checks.updateTemplate]: {
-    object: {
-      resource_type: "template",
-      resource_id: template.id,
+    [checks.updateTemplate]: {
+      object: {
+        resource_type: "template",
+        resource_id: template.id,
+      },
+      action: "update",
     },
-    action: "update",
-  },
-})
+  } as const)
 
 export const workspaceMachine = createMachine(
   {