Update another glib version reference to reflect bump to 2.56

See 97d6ffb154ce0afab2bafb81b824ff7faadb66fa

diff --git a/README.md b/README.md
index 535f8899da7fc77e4e06ed831680fcecc53b7a13..17dad2864cf4a6321f3b5f4dd760bf80b29cf921 100644 (file)
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ Install the following packages:
 
  * a C compiler, e.g. GCC
  * a C library, e.g. glibc
- * glib (>= 2.48)
+ * glib (>= 2.56)
  * flex
  * bison
  * Graphviz (libgvc) (>= 2.16) to build valadoc