diff --git a/platformio.ini b/platformio.ini
index a316f30..3bc5803 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -16,6 +16,7 @@ custom_prog_version = 2.14.0
 build_flags = 
 	-DVERSION=${this.custom_prog_version}
 	-DPIO_SRC_NAM="Daly2MQTT"
+	-DESP8266 -DATOMIC_FS_UPDATE
 extra_scripts = pre:tools/mini_html.py
 	pre:tools/pre_compile.py
 	post:tools/post_compile.py
diff --git a/src/webpages/HTML_SETTINGS.html b/src/webpages/HTML_SETTINGS.html
index 677eab8..67fc86d 100644
--- a/src/webpages/HTML_SETTINGS.html
+++ b/src/webpages/HTML_SETTINGS.html
@@ -6,7 +6,7 @@ <h1>Settings</h1>
 <div class="d-grid gap-2">
   <form id="uploadform">
     <div class="input-group">
-      <input class="form-control" id="uploadformfield" aria-describedby="uploadformfield" aria-label="Upload" type="file" accept=".bin" name="update">
+      <input class="form-control" id="uploadformfield" aria-describedby="uploadformfield" aria-label="Upload" type="file" accept=".bin.gz" name="update">
       <input id="uploadbutton" class="btn btn-outline-secondary" type="button" value="Firmware Update" onclick="postFile()">
     </div>
   </form>
diff --git a/tools/post_compile.py b/tools/post_compile.py
index b890cc9..e9e0839 100644
--- a/tools/post_compile.py
+++ b/tools/post_compile.py
@@ -1,6 +1,7 @@
 Import("env")
 import os
 import shutil
+import gzip
 
 def post_program_action(source, target, env):
 
@@ -24,5 +25,6 @@ def post_program_action(source, target, env):
     # copy the target file to the destination, if it exist
     if os.path.exists(targetfile):
         shutil.copy(targetfile, destpath)
+        with open(destpath+'/'+filename, 'rb') as src, gzip.open(destpath+'/'+os.path.splitext(filename)[0]+'_OTA.bin.gz', 'wb') as dst: dst.writelines(src)
 
 env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", post_program_action)