diff --git a/gui/kivy/tools/buildozer.spec b/gui/kivy/tools/buildozer.spec
index 1c4dde9d..467e6107 100644
--- a/gui/kivy/tools/buildozer.spec
+++ b/gui/kivy/tools/buildozer.spec
@@ -13,7 +13,7 @@ package.domain = org.electrum
 source.dir = .
 
 # (list) Source files to include (let empty to include all the files)
-source.include_exts = py,png,jpg,kv,atlas,ttf,*,txt, gif
+source.include_exts = py,png,jpg,kv,atlas,ttf,*,txt, gif, pem
 
 # (list) Source files to exclude (let empty to not exclude anything)
 source.exclude_exts = spec