diff --git a/crates/rust-analyzer/src/lsp_ext.rs b/crates/rust-analyzer/src/lsp_ext.rs
index c7a3a6911496f..f75a26eb79672 100644
--- a/crates/rust-analyzer/src/lsp_ext.rs
+++ b/crates/rust-analyzer/src/lsp_ext.rs
@@ -206,7 +206,9 @@ pub struct CodeAction {
 #[derive(Debug, Eq, PartialEq, Clone, Default, Deserialize, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct SnippetWorkspaceEdit {
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub changes: Option<HashMap<lsp_types::Url, Vec<lsp_types::TextEdit>>>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub document_changes: Option<Vec<SnippetDocumentChangeOperation>>,
 }
 
diff --git a/crates/rust-analyzer/tests/heavy_tests/main.rs b/crates/rust-analyzer/tests/heavy_tests/main.rs
index 5011cc2734dc2..74676b3eede86 100644
--- a/crates/rust-analyzer/tests/heavy_tests/main.rs
+++ b/crates/rust-analyzer/tests/heavy_tests/main.rs
@@ -333,29 +333,17 @@ fn main() {}
             partial_result_params: PartialResultParams::default(),
             work_done_progress_params: WorkDoneProgressParams::default(),
         },
-        json!([
-          {
-            "command": {
-              "arguments": [
+        json!([{
+            "edit": {
+              "documentChanges": [
                 {
-                  "cursorPosition": null,
-                  "label": "Create module",
-                  "workspaceEdit": {
-                    "documentChanges": [
-                      {
-                        "kind": "create",
-                        "uri": "file:///[..]/src/bar.rs"
-                      }
-                    ]
-                  }
+                  "kind": "create",
+                  "uri": "file:///[..]/src/bar.rs"
                 }
-              ],
-              "command": "rust-analyzer.applySourceChange",
-              "title": "Create module"
+              ]
             },
             "title": "Create module"
-          }
-        ]),
+        }]),
     );
 
     server.request::<CodeActionRequest>(
@@ -416,29 +404,17 @@ fn main() {{}}
             partial_result_params: PartialResultParams::default(),
             work_done_progress_params: WorkDoneProgressParams::default(),
         },
-        json!([
-          {
-            "command": {
-              "arguments": [
+        json!([{
+            "edit": {
+              "documentChanges": [
                 {
-                  "cursorPosition": null,
-                  "label": "Create module",
-                  "workspaceEdit": {
-                    "documentChanges": [
-                      {
-                        "kind": "create",
-                        "uri": "file:///[..]/src/bar.rs"
-                      }
-                    ]
-                  }
+                  "kind": "create",
+                  "uri": "file://[..]/src/bar.rs"
                 }
-              ],
-              "command": "rust-analyzer.applySourceChange",
-              "title": "Create module"
+              ]
             },
             "title": "Create module"
-          }
-        ]),
+        }]),
     );
 
     server.request::<CodeActionRequest>(