diff --git a/gravitee-node-license/pom.xml b/gravitee-node-license/pom.xml
index 09728905e..398ab1ec7 100644
--- a/gravitee-node-license/pom.xml
+++ b/gravitee-node-license/pom.xml
@@ -69,6 +69,10 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>jcl-over-slf4j</artifactId>
diff --git a/gravitee-node-license/src/main/java/io/gravitee/node/license/NodeLicenseServiceImpl.java b/gravitee-node-license/src/main/java/io/gravitee/node/license/NodeLicenseServiceImpl.java
index f5bd86e2c..723c4af85 100644
--- a/gravitee-node-license/src/main/java/io/gravitee/node/license/NodeLicenseServiceImpl.java
+++ b/gravitee-node-license/src/main/java/io/gravitee/node/license/NodeLicenseServiceImpl.java
@@ -23,10 +23,13 @@
 import io.gravitee.node.api.license.LicenseModelService;
 import io.gravitee.node.api.license.NodeLicenseService;
 import io.gravitee.node.api.license.model.LicenseModel;
+import io.gravitee.node.api.license.model.LicensePack;
+import io.gravitee.node.api.license.model.LicenseTier;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 /**
@@ -34,6 +37,7 @@
  * @author GraviteeSource Team
  */
 @Component
+@Slf4j
 public class NodeLicenseServiceImpl implements NodeLicenseService {
 
     private static final String LICENSE_TIER_KEY = "tier";
@@ -89,8 +93,14 @@ private String readTier() {
     private Set<String> readPacks() {
         Set<String> licensePacks = new HashSet<>(readList(LICENSE_PACKS_KEY));
         if (tier != null) {
-            Set<String> tierPacks = licenseModelService.getLicenseModel().getTiers().get(tier).getPacks();
-            licensePacks.addAll(tierPacks);
+            // Allow to declare a non existing tier. Useful when the license uses a tier that has been created for a newer version of gravitee-node
+            LicenseTier licenseTier = licenseModelService.getLicenseModel().getTiers().get(tier);
+            if (licenseTier != null) {
+                Set<String> tierPacks = licenseTier.getPacks();
+                licensePacks.addAll(tierPacks);
+            } else if (log.isDebugEnabled()) {
+                log.debug("Unknown tier: {}", tier);
+            }
         }
         return licensePacks;
     }
@@ -101,7 +111,13 @@ private Set<String> readFeatures() {
         licenseFeatures.addAll(readList(LICENSE_FEATURES_KEY));
         licenseFeatures.addAll(getLegacyFeatures());
         for (String pack : getPacks()) {
-            licenseFeatures.addAll(licenseModel.getPacks().get(pack).getFeatures());
+            // Allow to declare a non existing pack. Useful when the license uses a pack that has been created for a newer version of gravitee-node
+            LicensePack licensePack = licenseModel.getPacks().get(pack);
+            if (licensePack != null) {
+                licenseFeatures.addAll(licensePack.getFeatures());
+            } else if (log.isDebugEnabled()) {
+                log.debug("Unknown pack: {}", pack);
+            }
         }
         return licenseFeatures;
     }
diff --git a/gravitee-node-license/src/test/java/io/gravitee/node/license/NodeLicenseServiceTest.java b/gravitee-node-license/src/test/java/io/gravitee/node/license/NodeLicenseServiceTest.java
index 13b683c5b..f803dc628 100644
--- a/gravitee-node-license/src/test/java/io/gravitee/node/license/NodeLicenseServiceTest.java
+++ b/gravitee-node-license/src/test/java/io/gravitee/node/license/NodeLicenseServiceTest.java
@@ -70,7 +70,6 @@ void setUp() {
     @Test
     void shouldReturnTier() {
         when(tier.getString()).thenReturn("planet");
-        when(license.feature("tier")).thenReturn(Optional.of(tier));
         service.refresh();
         assertThat(service.getTier()).isEqualTo("planet");
     }
@@ -198,4 +197,51 @@ void shouldHaveLegacyFeatureEnabled() {
         service.refresh();
         assertThat(service.isFeatureEnabled("apim-api-designer")).isTrue();
     }
+
+    @Test
+    void shouldNotFailIfUnknownTier() {
+        when(tier.getString()).thenReturn("unknown");
+        when(packs.getString()).thenReturn("enterprise-legacy-upgrade");
+        service.refresh();
+        assertThat(service.getTier()).isEqualTo("unknown");
+        assertThat(service.getPacks()).containsExactly("enterprise-legacy-upgrade");
+        assertThat(service.getFeatures()).containsExactlyInAnyOrder("apim-policy-xslt", "apim-policy-ws-security-authentication");
+    }
+
+    @Test
+    void shouldNotFailIfUnknownPack() {
+        when(tier.getString()).thenReturn("planet");
+        when(packs.getString()).thenReturn("unknown");
+        service.refresh();
+        assertThat(service.getTier()).isEqualTo("planet");
+        assertThat(service.getPacks())
+            .containsExactlyInAnyOrder("enterprise-features", "enterprise-legacy-upgrade", "enterprise-identity-provider", "unknown");
+        assertThat(service.getFeatures())
+            .containsExactlyInAnyOrder(
+                "apim-api-designer",
+                "apim-dcr-registration",
+                "apim-custom-roles",
+                "apim-audit-trail",
+                "apim-sharding-tags",
+                "apim-openid-connect-sso",
+                "apim-debug-mode",
+                "gravitee-risk-assessment",
+                "risk-assessment",
+                "apim-bridge-gateway",
+                "apim-policy-xslt",
+                "apim-policy-ws-security-authentication",
+                "am-idp-salesforce",
+                "am-idp-saml",
+                "am-idp-ldap",
+                "am-idp-kerberos",
+                "am-idp-azure-ad",
+                "am-idp-gateway-handler-saml",
+                "am-gateway-handler-saml-idp",
+                "am-idp-http-flow",
+                "http-flow-am-idp",
+                "am-idp-france-connect",
+                "am-idp-cas",
+                "cas-am-idp"
+            );
+    }
 }
diff --git a/gravitee-node-license/src/test/resources/logback-test.xml b/gravitee-node-license/src/test/resources/logback-test.xml
new file mode 100644
index 000000000..7600d1d28
--- /dev/null
+++ b/gravitee-node-license/src/test/resources/logback-test.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!--
+  ~ Copyright (c) 2015-2016, The Gravitee team (http://www.gravitee.io)
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~  http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~  See the License for the specific language governing permissions and
+  ~  limitations under the License.
+  -->
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <logger name="io.gravitee" level="DEBUG" />
+
+    <root level="ERROR">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
+