diff --git a/.github/workflows/js-sdk-ci.yml b/.github/workflows/js-sdk-ci.yml
index 2f7e7a4..b30d0b9 100644
--- a/.github/workflows/js-sdk-ci.yml
+++ b/.github/workflows/js-sdk-ci.yml
@@ -104,8 +104,12 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        bun-version: ["1.1.0", "latest"]
-        os: [ubuntu-latest, windows-latest, macOS-latest]
+        bun-version: ["1.1.0", "1.1.34"]
+         # Bun fails to run tests on ubuntu-latest and macOS-latest.
+         # It may not be possible at all for now: https://github.com/oven-sh/bun/issues/10001
+         # Bun version "latest" (1.1.36) seems to have a regression,
+         # so we use 1.1.34 until it fixed.
+        os: [windows-latest]
     name: Bun ${{ matrix.bun-version }} (${{ matrix.os }}) test
     steps:
       - uses: actions/checkout@v4
diff --git a/README.md b/README.md
index 367eb76..c57b26d 100644
--- a/README.md
+++ b/README.md
@@ -222,7 +222,7 @@ The SDK is [tested](https://github.com/configcat/js-unified-sdk/blob/master/.git
   - Chromium (64.0.3282.0, 72.0.3626.0, 80.0.3987.0)
   - Firefox (latest, latest-beta, 84.0)
 - @configcat/sdk/bun:
-  - Bun (v1.1.0, latest stable) on Windows / Ubuntu / macOS
+  - Bun (v1.1.0, v1.1.34) on Windows
 - @configcat/sdk/deno:
   - Deno (v1.31, v1.46, latest stable) on Windows / Ubuntu / macOS
 - @configcat/sdk/node:
diff --git a/test/bun/index.ts b/test/bun/index.ts
index 61faacb..04c7e1f 100644
--- a/test/bun/index.ts
+++ b/test/bun/index.ts
@@ -54,6 +54,6 @@ for (const file of glob.globIterateSync(normalizePathSeparator(testDir) + "/**/*
     segments[segments.length - 1] = path.basename(fileName, path.extname(fileName));
 
     /* eslint-disable @typescript-eslint/no-require-imports */
-    require("../" + segments.join("/"));
+    await import("../" + segments.join("/"));
   }
 }