diff --git a/_tools/lib/builds.py b/_tools/lib/builds.py
new file mode 100644
index 0000000000..89ba13160b
--- /dev/null
+++ b/_tools/lib/builds.py
@@ -0,0 +1,18 @@
+import os
+
+from .network import download
+from .constants import tools_cache
+
+def builds_get(path):
+    url = f"http://builds.kolibrios.org/{path}"
+    output_path = f"{tools_cache}/builds.kolibrios.org/{path}"
+    output_dir = os.path.dirname(output_path)
+    os.makedirs(output_dir, exist_ok = True)
+    download(url, output_path, skip_exist = True)
+    return output_path
+
+def builds_get_contents(path):
+    output_path = builds_get(path)
+    with open(output_path, "rb") as f:
+        return f.read()
+
diff --git a/_tools/workspace/run.py b/_tools/workspace/run.py
index 553252a2b2..cbe1aa4490 100644
--- a/_tools/workspace/run.py
+++ b/_tools/workspace/run.py
@@ -11,6 +11,7 @@ sys.path.append(path_to_tools)
 
 from workspace.build import build
 
+from lib.builds import builds_get_contents
 from lib.makeflop import Floppy
 from lib.platform import is_win32, path
 from lib.logging import log
@@ -57,6 +58,11 @@ if __name__ == "__main__":
     img.delete_path("DEMOS")
     img.delete_path("3D")
 
+    # Insert faster kernel if need
+    if len(sys.argv) > 1 and sys.argv[1] == "--fast":
+        new_kernel = builds_get_contents("eng/data/kernel/trunk/kernel.mnt.pretest")
+        img.add_file_path("KERNEL.MNT", new_kernel)
+
     log("Moving program into kolibri image... ", end = "")
     with open(program_name, "rb") as file:
         file_data = file.read()