diff --git a/README b/README
index a95ef3ad..e1cbc53f 100644
--- a/README
+++ b/README
@@ -27,7 +27,7 @@ By using this software you agree to the disclaimer at the end of this text:
                    Compilation, First Glimpse, Installation
 
 Dynamic library and compile time header requirements for libisoburn-0.2.2 :
-- libburn.so.4  , version libburn-0.4.8 or higher
+- libburn.so.4  , version libburn-0.5.0 or higher
 - libisofs.so.6 , version libisofs-0.6.6 or higher
 libisoburn and xorriso will not start with libraries which are older than their
 headers seen at compile time. So compile in the oldest possible installation
diff --git a/xorriso/README b/xorriso/README
index 179a289b..cf147daa 100644
--- a/xorriso/README
+++ b/xorriso/README
@@ -167,7 +167,7 @@ This binary is leaner but depends on properly installed libraries of suitable
 revision.
 
 Dynamic library and compile time header requirements for libisoburn-0.2.2 :
-- libburn.so.4  , version libburn-0.4.8 or higher
+- libburn.so.4  , version libburn-0.5.0 or higher
 - libisofs.so.6 , version libisofs-0.6.6 or higher
 libisoburn and xorriso will not start with libraries which are older than their
 headers seen at compile time. So compile in the oldest possible installation