README.md in rgeo-3.0.0.pre.rc.2 vs README.md in rgeo-3.0.0.pre.rc.3

- old
+ new

@@ -35,10 +35,10 @@
 
 ### Dependencies
 
 RGeo works with the following Ruby implementations:
 
-*   MRI Ruby 2.3.0 or later.
+*   MRI Ruby 2.6.0 or later.
 *   Partial support for JRuby 9.0 or later. The FFI implementation of GEOS
     is available (ffi-geos gem required) but CAPI is not.
 *   See earlier versions for support for older ruby versions.
 
 Some features also require the following: