diff --git a/.gitignore b/.gitignore
index 23de6e20a61f1cb89853176feceac063503f6029..07f4bd775d41f84d5be821f395be0329396a5df7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,6 +49,8 @@ captures/
 .idea/modules.xml
 # Comment next line if keeping position of elements in Navigation Editor is relevant for you
 .idea/navEditor.xml
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
 
 # Keystore files
 # Uncomment the following lines if you do not want to check your keystore files in.
diff --git a/CheckersClient/.idea/caches/build_file_checksums.ser b/CheckersClient/.idea/caches/build_file_checksums.ser
index 12ab5d2ffca523bf265b6ba7e2d072f4a1de24dc..28b096af3f3f28d4509cadcb298d98a9303f4967 100644
Binary files a/CheckersClient/.idea/caches/build_file_checksums.ser and b/CheckersClient/.idea/caches/build_file_checksums.ser differ