diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/guac-manifest.json
index 4519da4ff..d219fb692 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "0.9.8",
+    "guacamoleVersion" : "0.9.9",
 
     "name"      : "MySQL Authentication",
     "namespace" : "guac-mysql",
diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/resources/guac-manifest.json
index 275ae227e..77f1f0b02 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "0.9.8",
+    "guacamoleVersion" : "0.9.9",
 
     "name"      : "PostgreSQL Authentication",
     "namespace" : "guac-postgresql",
diff --git a/extensions/guacamole-auth-ldap/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-ldap/src/main/resources/guac-manifest.json
index 606ccd051..e9448cfb3 100644
--- a/extensions/guacamole-auth-ldap/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-ldap/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "0.9.8",
+    "guacamoleVersion" : "0.9.9",
 
     "name"      : "LDAP Authentication",
     "namespace" : "guac-ldap",
diff --git a/extensions/guacamole-auth-noauth/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-noauth/src/main/resources/guac-manifest.json
index 8656db97f..c7d2bfa82 100644
--- a/extensions/guacamole-auth-noauth/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-noauth/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "0.9.8",
+    "guacamoleVersion" : "0.9.9",
 
     "name"      : "Disabled Authentication",
     "namespace" : "guac-noauth",
diff --git a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/extension/ExtensionModule.java b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/extension/ExtensionModule.java
index b9f070412..6296ea5de 100644
--- a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/extension/ExtensionModule.java
+++ b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/extension/ExtensionModule.java
@@ -65,7 +65,7 @@ public class ExtensionModule extends ServletModule {
     private static final List<String> ALLOWED_GUACAMOLE_VERSIONS =
         Collections.unmodifiableList(Arrays.asList(
             "*",
-            "0.9.8"
+            "0.9.9"
         ));
 
     /**