diff --git a/package-lock.json b/package-lock.json
index 62a46e3b2c..cb3760e927 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -39,7 +39,7 @@
         "prettier-plugin-tailwindcss": "^0.6.11",
         "tslib": "2.0.1",
         "type-fest": "^4.15.0",
-        "typescript": "5.6.2",
+        "typescript": "5.8.3",
         "typescript-eslint": "^8.29.0",
         "vitest": "^2.0.4"
       },
@@ -21802,9 +21802,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.6.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.6.2.tgz",
-      "integrity": "sha512-NW8ByodCSNCwZeghjN3o+JX5OFH0Ojg6sadjEKY4huZ52TqbJTJnDo5+Tw98lSy63NZvi4n+ez5m2u5d4PkZyw==",
+      "version": "5.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz",
+      "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
       "devOptional": true,
       "license": "Apache-2.0",
       "bin": {
@@ -23297,15 +23297,6 @@
         "node": ">= 6"
       }
     },
-    "node_modules/yaml-source-map": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/yaml-source-map/-/yaml-source-map-2.1.1.tgz",
-      "integrity": "sha512-eILAwrW4K1WA83mJXF0PLyeBhL4t6v9xyesRYhncG1zh9UPc43mMRgFTCi2FRYpOgUvGECNlNjoiksiX2xBKVg==",
-      "license": "MIT",
-      "peerDependencies": {
-        "yaml": "^1.6.0"
-      }
-    },
     "node_modules/yargs": {
       "version": "17.7.2",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.2.tgz",
@@ -23489,7 +23480,6 @@
         "tough-cookie": "^4.1.3",
         "uuid": "^9.0.1",
         "yaml": "^2.7.1",
-        "yaml-source-map": "^2.1.1",
         "zod": "^3.23.8"
       },
       "bin": {
@@ -23585,7 +23575,7 @@
         "tailwindcss": "^3.4.3",
         "tinykeys": "^2.1.0",
         "type-fest": "^4.15.0",
-        "typescript": "^5.6.2",
+        "typescript": "^5.8.3",
         "vite": "^5.2.8",
         "vkbeautify": "^0.99.3",
         "ws": "^8.17.1",
diff --git a/package.json b/package.json
index e2c79976b3..7db6a881f8 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "prettier-plugin-tailwindcss": "^0.6.11",
     "tslib": "2.0.1",
     "type-fest": "^4.15.0",
-    "typescript": "5.6.2",
+    "typescript": "5.8.3",
     "typescript-eslint": "^8.29.0",
     "vitest": "^2.0.4"
   },
diff --git a/packages/insomnia/package.json b/packages/insomnia/package.json
index 9c3564435e..b79df6fc49 100644
--- a/packages/insomnia/package.json
+++ b/packages/insomnia/package.json
@@ -174,7 +174,7 @@
     "tailwindcss": "^3.4.3",
     "tinykeys": "^2.1.0",
     "type-fest": "^4.15.0",
-    "typescript": "^5.6.2",
+    "typescript": "^5.8.3",
     "vite": "^5.2.8",
     "vkbeautify": "^0.99.3",
     "ws": "^8.17.1",
diff --git a/packages/insomnia/src/sync/git/mem-client.ts b/packages/insomnia/src/sync/git/mem-client.ts
index b94e346541..541ec311eb 100644
--- a/packages/insomnia/src/sync/git/mem-client.ts
+++ b/packages/insomnia/src/sync/git/mem-client.ts
@@ -149,14 +149,13 @@ export class MemClient {
       dirEntry.children.push(file);
     }
 
-    const dataBuff: Buffer = data instanceof Buffer ? data : Buffer.from(data, encoding);
     let newContents = Buffer.alloc(0);
 
     if (flag[0] === 'w') {
-      newContents = dataBuff;
+      newContents = typeof data === 'string' ? Buffer.from(data, encoding) : data;
     } else if (flag[0] === 'a') {
       const contentsBuff: Buffer = Buffer.from(file.contents, 'base64');
-      newContents = Buffer.concat([contentsBuff, dataBuff]);
+      newContents = Buffer.concat([contentsBuff, typeof data === 'string' ? Buffer.from(data, encoding) : data]);
     } else {
       throw new SystemError({
         code: 'EBADF',
diff --git a/packages/insomnia/src/ui/insomniaFetch.ts b/packages/insomnia/src/ui/insomniaFetch.ts
index ab72c8cb2e..bad025d715 100644
--- a/packages/insomnia/src/ui/insomniaFetch.ts
+++ b/packages/insomnia/src/ui/insomniaFetch.ts
@@ -73,7 +73,7 @@ export async function insomniaFetch<T = void>({
       }
       throw new ResponseFailError(errMsg, response);
     }
-    return isJson ? response.json() : response.text();
+    return isJson ? response.json() : (response.text() as Promise<T>);
   } catch (err) {
     if (err.name === 'AbortError') {
       throw new Error('insomniaFetch timed out');
diff --git a/packages/insomnia/src/ui/routes/runner.tsx b/packages/insomnia/src/ui/routes/runner.tsx
index d7803f47c0..a6de677bc7 100644
--- a/packages/insomnia/src/ui/routes/runner.tsx
+++ b/packages/insomnia/src/ui/routes/runner.tsx
@@ -6,7 +6,6 @@ import {
   DropIndicator,
   GridList,
   GridListItem,
-  type GridListItemProps,
   Heading,
   type Key,
   Tab,
@@ -635,11 +634,28 @@ export const Runner: FC<{}> = () => {
                         parentFolders.length > 0 ? <span className="ml-2">{parentFolders}</span> : null;
 
                       return (
-                        <RequestItem
+                        <GridListItem
                           textValue={item.name}
                           className={`runner-request-list-${item.name} border border-solid border-transparent text-[--color-font]`}
                           style={{ outline: 'none' }}
                         >
+                          <Button slot="drag" className="hover:cursor-grab">
+                            <Icon icon="grip-vertical" className="mr-2 w-2 text-[--hl]" />
+                          </Button>
+                          <Checkbox slot="selection">
+                            {({ isSelected }) => (
+                              <>
+                                {isSelected ? (
+                                  <i
+                                    className="fa fa-square-check fa-1x mr-2 h-4"
+                                    style={{ color: 'rgb(74 222 128)' }}
+                                  />
+                                ) : (
+                                  <i className="fa fa-square fa-1x mr-2 h-4" />
+                                )}
+                              </>
+                            )}
+                          </Checkbox>
                           {parentFolderContainer}
                           <span className={`ml-2 text-xs uppercase http-method-${item.method}`}>{item.method}</span>
                           <span
@@ -648,7 +664,7 @@ export const Runner: FC<{}> = () => {
                           >
                             {item.name}
                           </span>
-                        </RequestItem>
+                        </GridListItem>
                       );
                     }}
                   </GridList>
@@ -826,34 +842,6 @@ export const Runner: FC<{}> = () => {
 
 export default Runner;
 
-const RequestItem = ({ children, ...props }: GridListItemProps) => {
-  return (
-    <GridListItem {...props}>
-      {() => (
-        <>
-          <Button slot="drag" className="hover:cursor-grab">
-            <Icon icon="grip-vertical" className="mr-2 w-2 text-[--hl]" />
-          </Button>
-          <Checkbox slot="selection">
-            {({ isSelected }) => {
-              return (
-                <>
-                  {isSelected ? (
-                    <i className="fa fa-square-check fa-1x mr-2 h-4" style={{ color: 'rgb(74 222 128)' }} />
-                  ) : (
-                    <i className="fa fa-square fa-1x mr-2 h-4" />
-                  )}
-                </>
-              );
-            }}
-          </Checkbox>
-          {children}
-        </>
-      )}
-    </GridListItem>
-  );
-};
-
 // This is required for tracking the active request for one runner execution
 // Then in runner cancellation, both the active request and the runner execution will be canceled
 // TODO(george): Potentially it could be merged with maps in request-timing.ts and cancellation.ts