diff --git a/README.md b/README.md
index 84ef0c5b..f27faba5 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,14 @@ https://discord.gg/tmvS8A57J4
 
 Before we start - please note that discord.jar is still a work in progress and there are some risks of deploying it in a production enviroment.
 
+## Example Usages
+- [Tune](https://github.com/seailz/Tune) An example Discord Music bot built using discord.jar & LavaPlayer in just 1 hour, that's how simple it is!
+
+## Tools built for Discord.jar
+<ul>
+        <li><a href="https://github.com/discord-jar/discript">Discript</a> - a scripting language to simplify bot development.</li>
+</ul>
+
 ### Prerequisites
 
 <b>You'll need to add discord.jar to your project's dependencies. We are currently using
@@ -189,9 +197,6 @@ To contribute to the `/examples` module, please see [here](https://github.com/di
 ## License
 License info can be found [here](https://github.com/discord-jar/discord.jar/blob/main/LICENSE). This project is licensed under GNU General Public License V3
 
-## Example Usages
-- [Tune](https://github.com/seailz/Tune) An example Discord Music bot built using discord.jar & LavaPlayer in just 1 hour, that's how simple it is!
-
 
 ## Contact
 Our official Discord server:
diff --git a/pom.xml b/pom.xml
index ca74f170..619c1c81 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,7 +19,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.12.1</version>
+                <version>3.13.0</version>
                 <configuration>
                     <source>${java.version}</source>
                     <target>${java.version}</target>
@@ -28,7 +28,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.5.1</version>
+                <version>3.5.2</version>
                 <executions>
                     <execution>
                         <phase>package</phase>
@@ -94,7 +94,7 @@
         <dependency>
             <groupId>org.json</groupId>
             <artifactId>json</artifactId>
-            <version>20240205</version>
+            <version>20240303</version>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
@@ -105,7 +105,7 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-websocket</artifactId>
-            <version>3.2.3</version>
+            <version>3.2.4</version>
         </dependency>
         <!-- Used for marking methods and params -->
         <dependency>
diff --git a/src/main/java/com/seailz/discordjar/command/Command.java b/src/main/java/com/seailz/discordjar/command/Command.java
index ecee0993..f8ecbfb4 100644
--- a/src/main/java/com/seailz/discordjar/command/Command.java
+++ b/src/main/java/com/seailz/discordjar/command/Command.java
@@ -89,21 +89,21 @@ public static Command decompile(JSONObject obj) {
         boolean canUseInDms = true;
         boolean nsfw = false;
 
-        if (obj.has("name_localizations")) {
+        if (obj.has("name_localizations") && !obj.isNull("name_localizations")) {
             JSONObject nameLocalesJson = obj.getJSONObject("name_localizations");
             for (String locale : nameLocalesJson.keySet()) {
                 nameLocales.put(locale, nameLocalesJson.getString(locale));
             }
         }
 
-        if (obj.has("description_localizations")) {
+        if (obj.has("description_localizations") && !obj.isNull("description_localizations")) {
             JSONObject descriptionLocalesJson = obj.getJSONObject("description_localizations");
             for (String locale : descriptionLocalesJson.keySet()) {
                 descriptionLocales.put(locale, descriptionLocalesJson.getString(locale));
             }
         }
 
-        if (obj.has("default_member_permissions")) {
+        if (obj.has("default_member_permissions") && !obj.isNull("default_member_permissions")) {
             int permissions = obj.getInt("default_member_permissions");
             BitwiseUtil<Permission> util = new BitwiseUtil<>();
             EnumSet<Permission> permissionsList = util.get(permissions, Permission.class);
diff --git a/src/main/java/com/seailz/discordjar/events/EventDispatcher.java b/src/main/java/com/seailz/discordjar/events/EventDispatcher.java
index b1e9d890..b1509501 100644
--- a/src/main/java/com/seailz/discordjar/events/EventDispatcher.java
+++ b/src/main/java/com/seailz/discordjar/events/EventDispatcher.java
@@ -55,7 +55,15 @@ public void addListener(DiscordListener... listeners) {
         for (DiscordListener listener : listeners) {
             for (Method method : listener.getClass().getMethods()) {
                 if (method.isAnnotationPresent(EventMethod.class)) {
-                    Class<? extends Event> eventType = (Class<? extends Event>) method.getParameterTypes()[0];
+                    Class<?> maybeEventType = method.getParameterTypes()[0];
+
+                    if (!Event.class.isAssignableFrom(maybeEventType))
+                        throw new IllegalArgumentException(String.format("%s first arg is not of Event", method));
+                    else if (method.getParameterTypes().length != 1)
+                        throw new IllegalArgumentException(String.format("%s#%s is an invalid listener", method.getDeclaringClass(), method.getName()));
+
+                    @SuppressWarnings("unchecked")
+                    Class<? extends Event> eventType = (Class<? extends Event>) maybeEventType;
                     EventMethod eventMethod = method.getAnnotation(EventMethod.class);
 
                     String customId = null;
diff --git a/src/main/java/com/seailz/discordjar/model/application/Application.java b/src/main/java/com/seailz/discordjar/model/application/Application.java
index dd516cc3..7e95cb2e 100644
--- a/src/main/java/com/seailz/discordjar/model/application/Application.java
+++ b/src/main/java/com/seailz/discordjar/model/application/Application.java
@@ -78,11 +78,16 @@ public record Application(
         InstallParams installParams,
         String roleConnectionsVerificationUrl,
         int approximateGuildCount,
+        HashMap<IntegrationTypes, IntegrationTypeConfiguration> integrationTypes,
         DiscordJar discordJar
 ) implements Compilerable, Snowflake {
 
     @Override
     public JSONObject compile() {
+        JSONObject integrationTypes = new JSONObject();
+        this.integrationTypes.forEach((key, val) -> {
+            integrationTypes.put(String.valueOf(key.code), val.compile());
+        });
         return new JSONObject()
                 .put("id", id)
                 .put("name", name)
@@ -106,11 +111,12 @@ public JSONObject compile() {
                 .put("custom_install_url", customInstallUrl)
                 .put("role_connections_verification_url", roleConnectionsVerificationUrl)
                 .put("approximate_guild_count", approximateGuildCount)
+                .put("integration_types_config", integrationTypes)
                 .put("guild", guild.compile());
     }
 
     public static Application decompile(JSONObject obj, DiscordJar discordJar) {
-        if (obj == null) return new Application(null,  null, null, null, null, false, false, null, null, null, null, null, null, null, null, null, null, null, null, 0, null,  null, null, null, 0, discordJar);
+        if (obj == null) return new Application(null,  null, null, null, null, false, false, null, null, null, null, null, null, null, null, null, null, null, null, 0, null,  null, null, null, 0, null, discordJar);
         String id;
         String name;
         String iconUrl;
@@ -136,6 +142,7 @@ public static Application decompile(JSONObject obj, DiscordJar discordJar) {
         InstallParams installParams;
         String roleConnectionsVerificationUrl;
         int approximateGuildCount;
+        HashMap<IntegrationTypes, IntegrationTypeConfiguration> integrationTypesConfiguration = null;
 
         try {
             id = obj.getString("id");
@@ -282,6 +289,14 @@ public static Application decompile(JSONObject obj, DiscordJar discordJar) {
             guild = null;
         }
 
+        if (obj.has("integration_types_config")) {
+            integrationTypesConfiguration = new HashMap<>();
+            JSONObject integrationTypesConfig = obj.getJSONObject("integration_types_config");
+            for (String code : integrationTypesConfig.keySet()) {
+                integrationTypesConfiguration.put(IntegrationTypes.getByCode(Integer.parseInt(code)), IntegrationTypeConfiguration.decompile(integrationTypesConfig.getJSONObject(code)));
+            }
+        }
+
         return new Application(
                 id,
                 name,
@@ -308,6 +323,7 @@ public static Application decompile(JSONObject obj, DiscordJar discordJar) {
                 installParams,
                 roleConnectionsVerificationUrl,
                 approximateGuildCount,
+                integrationTypesConfiguration,
                 discordJar
         );
     }
@@ -348,7 +364,7 @@ public List<ApplicationRoleConnectionMetadata> getRoleConnections() {
      *
      * @param roleConnections The list of role connection metadata objects to update.
      *
-     * @throws com.seailz.discordjar.utils.Checker.NullArgumentException if the list is null.
+     * @throws Checker.NullArgumentException if the list is null.
      * @throws IllegalArgumentException if the list has more than 5 elements.
      */
     public void setRoleConnections(@NotNull List<ApplicationRoleConnectionMetadata> roleConnections) {
@@ -425,4 +441,49 @@ public int id() {
             return id;
         }
     }
+
+
+    public enum IntegrationTypes {
+
+        GUILD_INSTALL(0),
+        USER_INSTALL(1),
+        UNKNOWN(-1)
+        ;
+
+        private final int code;
+
+        IntegrationTypes(int code) {
+            this.code = code;
+        }
+
+        public int getCode() {
+            return code;
+        }
+
+        public static IntegrationTypes getByCode(int code) {
+            for (IntegrationTypes value : values()) {
+                if (value.getCode() == code) return value;
+            }
+            return UNKNOWN;
+        }
+    }
+
+    public record IntegrationTypeConfiguration(
+            InstallParams installParams
+    ) implements Compilerable {
+
+        @Override
+        public JSONObject compile() {
+            return new JSONObject()
+                    .put("oauth2_install_params", installParams == null ? JSONObject.NULL : installParams.compile());
+        }
+
+        public static IntegrationTypeConfiguration decompile(JSONObject obj) {
+            InstallParams oauth2InstallParams = null;
+            if (obj.has("oauth2_install_params")) {
+                oauth2InstallParams = InstallParams.decompile(obj.getJSONObject("oauth2_install_params"));
+            }
+            return new IntegrationTypeConfiguration(oauth2InstallParams);
+        }
+    }
 }
diff --git a/src/main/java/com/seailz/discordjar/model/guild/Guild.java b/src/main/java/com/seailz/discordjar/model/guild/Guild.java
index a33e75be..1ac4e39d 100644
--- a/src/main/java/com/seailz/discordjar/model/guild/Guild.java
+++ b/src/main/java/com/seailz/discordjar/model/guild/Guild.java
@@ -1138,6 +1138,7 @@ public List<Role> roles() {
         }
         if (res == null) {
             System.out.println(response.code() + " " + (response.body() == null ? "null" : response.body().toString()));
+            return List.of();
         }
 
         res.forEach(o -> roles.add(Role.decompile((JSONObject) o)));
@@ -1232,7 +1233,7 @@ public StringFormatter formatter() {
      * <p/>
      * <b>This action is irreversible!</b>
      */
-    public void delete() throws IllegalAccessException {
+    public void delete() {
         DiscordResponse response;
         try {
             response = new DiscordRequest(
diff --git a/src/main/java/com/seailz/discordjar/utils/rest/DiscordRequest.java b/src/main/java/com/seailz/discordjar/utils/rest/DiscordRequest.java
index c7aadb17..3c40b38d 100644
--- a/src/main/java/com/seailz/discordjar/utils/rest/DiscordRequest.java
+++ b/src/main/java/com/seailz/discordjar/utils/rest/DiscordRequest.java
@@ -240,9 +240,6 @@ private DiscordResponse invoke(String contentType, boolean auth) throws Unhandle
             if (auth) {
                 requestBuilder.addHeader("Authorization", "Bot " + djv.getToken());
             }
-            if (contentType == null) {
-                requestBuilder.addHeader("Content-Type", "application/json");
-            }
             if (contentType != null) {
                 requestBuilder.addHeader("Content-Type", contentType);
             }