diff --git a/module-welcome/src/main/kotlin/org/quiltmc/community/cozy/modules/welcome/config/SimpleWelcomeChannelConfig.kt b/module-welcome/src/main/kotlin/org/quiltmc/community/cozy/modules/welcome/config/SimpleWelcomeChannelConfig.kt
index ffc16124..afdb6d47 100644
--- a/module-welcome/src/main/kotlin/org/quiltmc/community/cozy/modules/welcome/config/SimpleWelcomeChannelConfig.kt
+++ b/module-welcome/src/main/kotlin/org/quiltmc/community/cozy/modules/welcome/config/SimpleWelcomeChannelConfig.kt
@@ -9,11 +9,16 @@ package org.quiltmc.community.cozy.modules.welcome.config
 import com.kotlindiscord.kord.extensions.checks.types.Check
 import dev.kord.core.entity.Guild
 import dev.kord.core.entity.channel.GuildMessageChannel
+import kotlinx.serialization.modules.PolymorphicModuleBuilder
+import org.quiltmc.community.cozy.modules.welcome.blocks.Block
 import kotlin.time.Duration
 
 internal typealias LogChannelGetter = (suspend (channel: GuildMessageChannel, guild: Guild) -> GuildMessageChannel?)?
 
 public class SimpleWelcomeChannelConfig(private val builder: Builder) : WelcomeChannelConfig() {
+	override val serializerBuilders: List<PolymorphicModuleBuilder<Block>.() -> Unit> =
+		builder.serializerBuilders
+
 	override suspend fun getLoggingChannel(channel: GuildMessageChannel, guild: Guild): GuildMessageChannel? =
 		builder.loggingChannelGetter?.invoke(channel, guild)
 
@@ -24,8 +29,13 @@ public class SimpleWelcomeChannelConfig(private val builder: Builder) : WelcomeC
 		internal val staffCommandChecks: MutableList<Check<*>> = mutableListOf()
 		internal var loggingChannelGetter: LogChannelGetter = null
 
+		public val serializerBuilders: MutableList<PolymorphicModuleBuilder<Block>.() -> Unit> = mutableListOf()
 		public var refreshDuration: Duration? = null
 
+		public fun serializer(body: PolymorphicModuleBuilder<Block>.() -> Unit) {
+			serializerBuilders.add(body)
+		}
+
 		public fun staffCommandCheck(body: Check<*>) {
 			staffCommandChecks.add(body)
 		}
diff --git a/module-welcome/src/main/kotlin/org/quiltmc/community/cozy/modules/welcome/config/WelcomeChannelConfig.kt b/module-welcome/src/main/kotlin/org/quiltmc/community/cozy/modules/welcome/config/WelcomeChannelConfig.kt
index 11034f86..19e1ab1e 100644
--- a/module-welcome/src/main/kotlin/org/quiltmc/community/cozy/modules/welcome/config/WelcomeChannelConfig.kt
+++ b/module-welcome/src/main/kotlin/org/quiltmc/community/cozy/modules/welcome/config/WelcomeChannelConfig.kt
@@ -9,6 +9,7 @@ package org.quiltmc.community.cozy.modules.welcome.config
 import com.kotlindiscord.kord.extensions.checks.types.Check
 import dev.kord.core.entity.Guild
 import dev.kord.core.entity.channel.GuildMessageChannel
+import kotlinx.serialization.modules.PolymorphicModuleBuilder
 import kotlinx.serialization.modules.SerializersModule
 import kotlinx.serialization.modules.polymorphic
 import kotlinx.serialization.modules.subclass
@@ -16,9 +17,13 @@ import org.quiltmc.community.cozy.modules.welcome.blocks.*
 import kotlin.time.Duration
 
 public abstract class WelcomeChannelConfig {
-	public val defaultSerializersModule: SerializersModule =
+	public open val serializerBuilders: List<PolymorphicModuleBuilder<Block>.() -> Unit> = mutableListOf()
+
+	public val defaultSerializersModule: SerializersModule by lazy {
 		SerializersModule {
 			polymorphic(Block::class) {
+				serializerBuilders.forEach { it() }
+
 				subclass(ComplianceBlock::class)
 				subclass(EmbedBlock::class)
 				subclass(LinksBlock::class)
@@ -29,6 +34,7 @@ public abstract class WelcomeChannelConfig {
 				subclass(ThreadListBlock::class)
 			}
 		}
+	}
 
 	/** Get the configured logging channel for the given channel and guild. **/
 	public abstract suspend fun getLoggingChannel(channel: GuildMessageChannel, guild: Guild): GuildMessageChannel?