diff --git a/compiler/core/src/zserio/tools/ZserioVersion.java b/compiler/core/src/zserio/tools/ZserioVersion.java
index bc4bd9cee..4bef1ed86 100644
--- a/compiler/core/src/zserio/tools/ZserioVersion.java
+++ b/compiler/core/src/zserio/tools/ZserioVersion.java
@@ -155,7 +155,7 @@ private int comparePreRelease(Integer otherPreRelease)
     }
 
     /** ZserioTool version string. */
-    public static final String VERSION_STRING = "2.9.0-pre1";
+    public static final String VERSION_STRING = "2.9.0";
 
     private final int major;
     private final int minor;
diff --git a/compiler/extensions/cpp/runtime/doc/doxyfile b/compiler/extensions/cpp/runtime/doc/doxyfile
index 70bc33a69..4204d0418 100644
--- a/compiler/extensions/cpp/runtime/doc/doxyfile
+++ b/compiler/extensions/cpp/runtime/doc/doxyfile
@@ -1,5 +1,5 @@
 PROJECT_NAME           = Zserio
-PROJECT_NUMBER         = 2.9.0-pre1
+PROJECT_NUMBER         = 2.9.0
 PROJECT_BRIEF          = "C++ runtime library"
 OUTPUT_DIRECTORY       = "$(ZSERIO_CPP_RUNTIME_OUTPUT_DIR)"
 DISTRIBUTE_GROUP_DOC   = YES
diff --git a/compiler/extensions/cpp/runtime/src/zserio/CppRuntimeVersion.h b/compiler/extensions/cpp/runtime/src/zserio/CppRuntimeVersion.h
index 51de700d4..76d8e9b6d 100644
--- a/compiler/extensions/cpp/runtime/src/zserio/CppRuntimeVersion.h
+++ b/compiler/extensions/cpp/runtime/src/zserio/CppRuntimeVersion.h
@@ -4,6 +4,6 @@
 /**
  * C++ extension runtime version string.
  */
-#define CPP_EXTENSION_RUNTIME_VERSION_STRING "2.9.0-pre1"
+#define CPP_EXTENSION_RUNTIME_VERSION_STRING "2.9.0"
 
 #endif // ifndef ZSERIO_CPP_RUNTIME_VERSION_H_INC
diff --git a/compiler/extensions/cpp/src/zserio/extension/cpp/CppExtensionVersion.java b/compiler/extensions/cpp/src/zserio/extension/cpp/CppExtensionVersion.java
index 28c7cff89..d8e7a0454 100644
--- a/compiler/extensions/cpp/src/zserio/extension/cpp/CppExtensionVersion.java
+++ b/compiler/extensions/cpp/src/zserio/extension/cpp/CppExtensionVersion.java
@@ -9,5 +9,5 @@
 public class CppExtensionVersion
 {
     /** C++ extension version string. */
-    public static final String VERSION_STRING = "2.9.0-pre1";
+    public static final String VERSION_STRING = "2.9.0";
 }
diff --git a/compiler/extensions/doc/src/zserio/extension/doc/DocExtensionVersion.java b/compiler/extensions/doc/src/zserio/extension/doc/DocExtensionVersion.java
index cedbfd8aa..c9da67869 100644
--- a/compiler/extensions/doc/src/zserio/extension/doc/DocExtensionVersion.java
+++ b/compiler/extensions/doc/src/zserio/extension/doc/DocExtensionVersion.java
@@ -8,5 +8,5 @@
  */
 class DocExtensionVersion
 {
-    public static final String VERSION_STRING = "2.9.0-pre1";
+    public static final String VERSION_STRING = "2.9.0";
 }
diff --git a/compiler/extensions/java/src/zserio/extension/java/JavaExtensionVersion.java b/compiler/extensions/java/src/zserio/extension/java/JavaExtensionVersion.java
index eb0308789..fdf2f844c 100644
--- a/compiler/extensions/java/src/zserio/extension/java/JavaExtensionVersion.java
+++ b/compiler/extensions/java/src/zserio/extension/java/JavaExtensionVersion.java
@@ -9,5 +9,5 @@
 public class JavaExtensionVersion
 {
     /** Java extension version string. */
-    public static final String VERSION_STRING = "2.9.0-pre1";
+    public static final String VERSION_STRING = "2.9.0";
 }
diff --git a/compiler/extensions/python/runtime/src/zserio/__init__.py b/compiler/extensions/python/runtime/src/zserio/__init__.py
index 8e4cb245b..9b7ada584 100644
--- a/compiler/extensions/python/runtime/src/zserio/__init__.py
+++ b/compiler/extensions/python/runtime/src/zserio/__init__.py
@@ -49,4 +49,4 @@
 
 
 #: Zserio Python runtime library version string.
-VERSION_STRING = "2.9.0-pre1"
+VERSION_STRING = "2.9.0"
diff --git a/compiler/extensions/python/src/zserio/extension/python/PythonExtensionVersion.java b/compiler/extensions/python/src/zserio/extension/python/PythonExtensionVersion.java
index 25ffa1221..955a8c226 100644
--- a/compiler/extensions/python/src/zserio/extension/python/PythonExtensionVersion.java
+++ b/compiler/extensions/python/src/zserio/extension/python/PythonExtensionVersion.java
@@ -9,5 +9,5 @@
 class PythonExtensionVersion
 {
     /** Python extension version string. */
-    public static final String VERSION_STRING = "2.9.0-pre1";
+    public static final String VERSION_STRING = "2.9.0";
 }
diff --git a/compiler/extensions/xml/src/zserio/extension/xml/XmlExtensionVersion.java b/compiler/extensions/xml/src/zserio/extension/xml/XmlExtensionVersion.java
index 297a22d71..c9a2ffeab 100644
--- a/compiler/extensions/xml/src/zserio/extension/xml/XmlExtensionVersion.java
+++ b/compiler/extensions/xml/src/zserio/extension/xml/XmlExtensionVersion.java
@@ -9,5 +9,5 @@
 public class XmlExtensionVersion
 {
     /** XML extension version string. */
-    public static final String VERSION_STRING = "2.9.0-pre1";
+    public static final String VERSION_STRING = "2.9.0";
 }