diff --git a/CHANGELOG b/CHANGELOG
index c4da9d3..7daa17e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+V2.1 (2024-08-08)
+ - Adapted to libcdio/libiso9660 2.x, which are now the required versions
+
 V2.0 (2014-05-10)
  - The syntax of catalog files has changed slightly:
     - File and directory names are no longer enclosed in [] brackets.
diff --git a/README b/README
index 71defe2..df122da 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-PSXImager V2.0
+PSXImager V2.1
 ==============
 
 PSXImager is a collection of tools for dumping and (pre-)mastering
diff --git a/configure.ac b/configure.ac
index 35d329e..2950a56 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl Information on the package.
 AC_PREREQ(2.69)
-AC_INIT([PSXImager], [2.0], [cb@cebix.net], [psximager])
+AC_INIT([PSXImager], [2.1], [cb@cebix.net], [psximager])
 AC_CONFIG_SRCDIR([src/psxrip.cpp])
 AM_INIT_AUTOMAKE([1.12 foreign])
 
diff --git a/src/psxbuild.cpp b/src/psxbuild.cpp
index 9152a39..471f0e0 100644
--- a/src/psxbuild.cpp
+++ b/src/psxbuild.cpp
@@ -49,7 +49,7 @@ using boost::format;
 using namespace std;
 
 
-#define TOOL_VERSION "PSXBuild 2.0"
+#define TOOL_VERSION "PSXBuild 2.1"
 
 
 struct FileNode;
diff --git a/src/psxinject.cpp b/src/psxinject.cpp
index 9678394..69649b8 100644
--- a/src/psxinject.cpp
+++ b/src/psxinject.cpp
@@ -42,7 +42,7 @@ using boost::format;
 using namespace std;
 
 
-#define TOOL_VERSION "PSXInject 2.0"
+#define TOOL_VERSION "PSXInject 2.1"
 
 
 // Print usage information and exit.
diff --git a/src/psxrip.cpp b/src/psxrip.cpp
index 0d5a55a..1f81b4c 100644
--- a/src/psxrip.cpp
+++ b/src/psxrip.cpp
@@ -43,7 +43,7 @@ using boost::format;
 using namespace std;
 
 
-#define TOOL_VERSION "PSXRip 2.0"
+#define TOOL_VERSION "PSXRip 2.1"
 
 
 // Sector buffer