diff --git a/guac-upgrade.sh b/guac-upgrade.sh
index 9b70f6e..16c0b50 100755
--- a/guac-upgrade.sh
+++ b/guac-upgrade.sh
@@ -197,6 +197,39 @@ for file in /etc/guacamole/extensions/guacamole-auth-duo*.jar; do
     fi
 done
 
+function download_sso_auth () {
+    wget -q --show-progress -O guacamole-auth-sso-${GUACVERSION}.tar.gz ${SERVER}/binary/guacamole-auth-sso-${GUACVERSION}.tar.gz
+    if [ $? -ne 0 ]; then
+        echo -e "${RED}Failed to download guacamole-auth-sso-${GUACVERSION}.tar.gz"
+        echo -e "${SERVER}/binary/guacamole-auth-sso-${GUACVERSION}.tar.gz"
+        exit 1
+    fi
+    echo -e "${GREEN}Downloaded guacamole-auth-sso-${GUACVERSION}.tar.gz${NC}"
+    tar -xzf guacamole-auth-sso-${GUACVERSION}.tar.gz
+    cp guacamole-auth-sso-${GUACVERSION}/saml/guacamole-auth-sso-saml-${GUACVERSION}.jar /etc/guacamole/extensions/
+    echo -e "${GREEN}SAML copied to extensions.${NC}"
+    break
+}
+
+# Handle upgrading SAML plugin if present
+for file in /etc/guacamole/extensions/guacamole-auth-saml*.jar; do
+    if [[ -f $file ]]; then
+        # Upgrade SAML
+        echo -e "${BLUE}SAML extension was found, upgrading...${NC}"
+        rm /etc/guacamole/extensions/guacamole-auth-saml*.jar
+        download_sso_auth
+    fi
+done
+# Handle newer install/upgrade with different package name
+for file in /etc/guacamole/extensions/guacamole-auth-sso-saml*.jar; do
+    if [[ -f $file ]]; then
+        # Upgrade SAML
+        echo -e "${BLUE}SAML extension was found, upgrading...${NC}"
+        rm /etc/guacamole/extensions/guacamole-auth-sso-saml*.jar
+        download_sso_auth
+    fi
+done
+
 # Fix for #196
 mkdir -p /usr/sbin/.config/freerdp
 chown daemon:daemon /usr/sbin/.config/freerdp