diff --git a/extensions/guacamole-auth-duo/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-duo/src/main/resources/guac-manifest.json
index 587bf906b..5d98adca4 100644
--- a/extensions/guacamole-auth-duo/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-duo/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "Duo TFA Authentication Backend",
     "namespace" : "duo",
diff --git a/extensions/guacamole-auth-header/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-header/src/main/resources/guac-manifest.json
index 93d2c55c2..39a2bac43 100644
--- a/extensions/guacamole-auth-header/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-header/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "HTTP Header Authentication Extension",
     "namespace" : "header",
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 df0976d9d..6711a36df 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" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "MySQL Authentication",
     "namespace" : "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 b1d0656f1..5fe5ec183 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" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "PostgreSQL Authentication",
     "namespace" : "postgresql",
diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/guac-manifest.json
index 261ffb190..eded5ff3f 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-sqlserver/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "SQLServer Authentication",
     "namespace" : "sqlserver",
diff --git a/extensions/guacamole-auth-json/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-json/src/main/resources/guac-manifest.json
index 384df076e..cd5d61709 100644
--- a/extensions/guacamole-auth-json/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-json/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "Encrypted JSON Authentication",
     "namespace" : "json",
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 53874d382..d0c02721a 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" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "LDAP Authentication",
     "namespace" : "ldap",
diff --git a/extensions/guacamole-auth-quickconnect/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-quickconnect/src/main/resources/guac-manifest.json
index 46841c003..889197ca2 100644
--- a/extensions/guacamole-auth-quickconnect/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-quickconnect/src/main/resources/guac-manifest.json
@@ -1,5 +1,5 @@
 {
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"             : "Adhoc Guacamole Connections",
     "namespace"        : "quickconnect",
diff --git a/extensions/guacamole-auth-radius/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-radius/src/main/resources/guac-manifest.json
index dbacce8e9..6b549699b 100644
--- a/extensions/guacamole-auth-radius/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-radius/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "RADIUS Authentication Backend",
     "namespace" : "radius",
diff --git a/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-cas/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-cas/src/main/resources/guac-manifest.json
index 5c54ac743..db0af2c81 100644
--- a/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-cas/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-cas/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "CAS Authentication Extension",
     "namespace" : "cas",
diff --git a/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-openid/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-openid/src/main/resources/guac-manifest.json
index ce1b7ba06..0f0efa95f 100644
--- a/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-openid/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-openid/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "OpenID Authentication Extension",
     "namespace" : "openid",
diff --git a/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-saml/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-saml/src/main/resources/guac-manifest.json
index ab68675fb..2a7f452e6 100644
--- a/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-saml/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-sso/modules/guacamole-auth-sso-saml/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "SAML Authentication Extension",
     "namespace" : "saml",
diff --git a/extensions/guacamole-auth-totp/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-totp/src/main/resources/guac-manifest.json
index f6fbf46e1..d0cbf15bf 100644
--- a/extensions/guacamole-auth-totp/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-totp/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "TOTP TFA Authentication Backend",
     "namespace" : "totp",
diff --git a/extensions/guacamole-history-recording-storage/src/main/resources/guac-manifest.json b/extensions/guacamole-history-recording-storage/src/main/resources/guac-manifest.json
index 11053424b..7b3fe622e 100644
--- a/extensions/guacamole-history-recording-storage/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-history-recording-storage/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "Session Recording Storage",
     "namespace" : "recording-storage",
diff --git a/extensions/guacamole-vault/modules/guacamole-vault-ksm/src/main/resources/guac-manifest.json b/extensions/guacamole-vault/modules/guacamole-vault-ksm/src/main/resources/guac-manifest.json
index 2c00ae144..aadd43a5b 100644
--- a/extensions/guacamole-vault/modules/guacamole-vault-ksm/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-vault/modules/guacamole-vault-ksm/src/main/resources/guac-manifest.json
@@ -1,6 +1,6 @@
 {
 
-    "guacamoleVersion" : "1.5.4",
+    "guacamoleVersion" : "1.5.5",
 
     "name"      : "Keeper Secrets Manager",
     "namespace" : "keeper-secrets-manager",
diff --git a/guacamole/src/main/java/org/apache/guacamole/extension/ExtensionModule.java b/guacamole/src/main/java/org/apache/guacamole/extension/ExtensionModule.java
index 9f04f4122..b0f6537a7 100644
--- a/guacamole/src/main/java/org/apache/guacamole/extension/ExtensionModule.java
+++ b/guacamole/src/main/java/org/apache/guacamole/extension/ExtensionModule.java
@@ -73,7 +73,8 @@ public class ExtensionModule extends ServletModule {
             "1.5.1",
             "1.5.2",
             "1.5.3",
-            "1.5.4"
+            "1.5.4",
+            "1.5.5"
         ));
 
     /**