diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index 2111e24..f9cdb66 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -7,8 +7,8 @@ import com.google.protobuf.gradle.protobuf
 import com.google.protobuf.gradle.protoc
 import org.gradle.kotlin.dsl.invoke
 
-val grpcVersion = "1.44.1"
-val grpcKotlinVersion = "1.2.1"
+val grpcVersion = "1.61.1"
+val grpcKotlinVersion = "1.4.1"
 val protobufVersion = "3.19.4"
 
 plugins {
@@ -42,7 +42,7 @@ protobuf {
             artifact = "io.grpc:protoc-gen-grpc-java:$grpcVersion"
         }
         id("grpckt") {
-            artifact = "io.grpc:protoc-gen-grpc-kotlin:$grpcKotlinVersion:jdk7@jar"
+            artifact = "io.grpc:protoc-gen-grpc-kotlin:$grpcKotlinVersion:jdk8@jar"
         }
     }
     generateProtoTasks {
diff --git a/core/src/main/kotlin/core/database/LocalCaches.kt b/core/src/main/kotlin/core/database/LocalCaches.kt
index 8a2ddfd..47fa4b4 100644
--- a/core/src/main/kotlin/core/database/LocalCaches.kt
+++ b/core/src/main/kotlin/core/database/LocalCaches.kt
@@ -5,32 +5,32 @@ import com.google.common.cache.CacheBuilder
 import core.assets.*
 import core.database.entities.Announce
 import core.interact.i18n.Language
-import java.time.Duration
 import java.util.*
+import java.util.concurrent.TimeUnit
 
 data class LocalCaches(
     val guildProfileUidCache: Cache<GuildUid, Guild> = CacheBuilder
         .newBuilder()
         .maximumSize(1000)
-        .expireAfterAccess(Duration.ofDays(1))
+        .expireAfterAccess(1, TimeUnit.DAYS)
         .build(),
 
     val userProfileUidCache: Cache<UserUid, User> = CacheBuilder
         .newBuilder()
         .maximumSize(1000)
-        .expireAfterAccess(Duration.ofHours(6))
+        .expireAfterAccess(6, TimeUnit.HOURS)
         .build(),
 
     val guildProfileGivenIdCache: Cache<GuildId, Guild> = CacheBuilder
         .newBuilder()
         .maximumSize(1000)
-        .expireAfterAccess(Duration.ofDays(1))
+        .expireAfterAccess(1, TimeUnit.DAYS)
         .build(),
 
     val userProfileGivenIdCache: Cache<UserId, User> = CacheBuilder
         .newBuilder()
         .maximumSize(1000)
-        .expireAfterAccess(Duration.ofHours(6))
+        .expireAfterAccess(6, TimeUnit.HOURS)
         .build(),
 
     var announceCache: SortedMap<Int, Map<Language, Announce>> = sortedMapOf()