diff --git a/app/build.gradle b/app/build.gradle
index 2ff97221..2efa8126 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -14,8 +14,8 @@ android {
         applicationId "com.termux"
         minSdkVersion 21
         targetSdkVersion 28
-        versionCode 66026
-        versionName "0.66_v0.2.6_nix"
+        versionCode 66027
+        versionName "0.66_v0.2.7_nix"
         applicationIdSuffix ".nix"
     }
 
diff --git a/app/src/main/java/com/termux/app/TermuxInstaller.java b/app/src/main/java/com/termux/app/TermuxInstaller.java
index 5a15df62..bb7a5bcb 100644
--- a/app/src/main/java/com/termux/app/TermuxInstaller.java
+++ b/app/src/main/java/com/termux/app/TermuxInstaller.java
@@ -52,7 +52,7 @@ import java.util.zip.ZipInputStream;
  */
 final class TermuxInstaller {
 
-    static String defaultBootstrapURL = "https://nix-on-droid.unboiled.info/bootstrap-release-21.05";
+    static String defaultBootstrapURL = "https://nix-on-droid.unboiled.info/bootstrap-release-21.11";
 
     /** Performs setup if necessary. */
     static void setupIfNeeded(final Activity activity, final Runnable whenDone) {