diff --git a/.gitignore b/.gitignore
index 23de6e20a61f1cb89853176feceac063503f6029..29c3502744ba04c376bf7c5705832b2adf8631e6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,6 +49,10 @@ 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
+CheckersServer/.idea/caches
+CheckersClient/.idea/caches
 
 # 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
deleted file mode 100644
index ff2c783aa53bb9b4f4b5276e8b692f30a5ec539a..0000000000000000000000000000000000000000
Binary files a/CheckersClient/.idea/caches/build_file_checksums.ser and /dev/null differ
diff --git a/CheckersServer/.idea/caches/build_file_checksums.ser b/CheckersServer/.idea/caches/build_file_checksums.ser
deleted file mode 100644
index 47d0d86c7d85efaa967a18f7352fc5005063ac72..0000000000000000000000000000000000000000
Binary files a/CheckersServer/.idea/caches/build_file_checksums.ser and /dev/null differ