diff --git a/extras/tools/lzss.dylib b/extras/tools/lzss.dylib
new file mode 100755
index 000000000..77e1d5153
Binary files /dev/null and b/extras/tools/lzss.dylib differ
diff --git a/extras/tools/lzss.py b/extras/tools/lzss.py
index b37aa4f96..931870788 100755
--- a/extras/tools/lzss.py
+++ b/extras/tools/lzss.py
@@ -1,9 +1,12 @@
 #!/usr/bin/python3
 
+import platform
 import sys
 import ctypes
 
-LZSS_SO_FILE = "./lzss.so"
+LZSS_SO_EXT = "so" if platform.uname()[0] != "Darwin" else "dylib"
+
+LZSS_SO_FILE = f"./lzss.{LZSS_SO_EXT}"
 
 if len(sys.argv) != 4:
     print ("Usage: lzss.py --[encode|decode] infile outfile")