diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index 9b02d59..8801066 100644
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -3,4 +3,7 @@
   <component name="Kotlin2JvmCompilerArguments">
     <option name="jvmTarget" value="11" />
   </component>
+  <component name="KotlinJpsPluginSettings">
+    <option name="version" value="1.7.20" />
+  </component>
 </project>
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index 09ee113..85d61ed 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -6,7 +6,7 @@ plugins {
     jacoco
 
     id("maven-publish")
-    kotlin("jvm") version "1.5.10"
+    kotlin("jvm") version "1.7.20"
 
     id("org.jlleitschuh.gradle.ktlint") version "10.0.0"
     id("org.owasp.dependencycheck") version "6.1.1"
@@ -26,8 +26,6 @@ repositories {
 tasks.withType<KotlinCompile> {
     kotlinOptions {
         jvmTarget = "11"
-        sourceCompatibility = "11"
-        targetCompatibility = "11"
     }
 }
 
@@ -65,8 +63,8 @@ tasks.publishToMavenLocal {
 }
 
 dependencies {
-    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.5.20")
-    implementation("org.jetbrains.kotlin:kotlin-reflect:1.5.20")
+    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.7.20")
+    implementation("org.jetbrains.kotlin:kotlin-reflect:1.7.20")
     implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.12.1")
     implementation("com.fasterxml.jackson.datatype:jackson-datatype-joda:2.12.1")
     implementation("com.github.jasync-sql:jasync-postgresql:1.1.7")
@@ -77,7 +75,7 @@ dependencies {
     testImplementation("ch.qos.logback:logback-core:1.2.3")
     testImplementation("io.mockk:mockk:1.10.6")
     testImplementation("org.junit.jupiter:junit-jupiter:5.7.1")
-    testImplementation("org.jetbrains.kotlin:kotlin-test-junit:1.5.20")
+    testImplementation("org.jetbrains.kotlin:kotlin-test-junit:1.7.20")
     testImplementation("org.amshove.kluent:kluent:1.65")
 }
 
diff --git a/gradle.properties b/gradle.properties
index 00a8cd7..c9ef82b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,4 @@
 kotlin.code.style=official
-kotlin_version=1.5.10
 systemProp.sonar.host.url=https://sonarcloud.io
 systemProp.sonar.projectKey=postgres-json
 systemProp.sonar.projectName=PostgresJson
diff --git a/src/main/kotlin/fr/postgresjson/connexion/Connection.kt b/src/main/kotlin/fr/postgresjson/connexion/Connection.kt
index 9fcd2d6..8a58434 100644
--- a/src/main/kotlin/fr/postgresjson/connexion/Connection.kt
+++ b/src/main/kotlin/fr/postgresjson/connexion/Connection.kt
@@ -106,7 +106,7 @@ class Connection(
         val result = exec(sql, values)
         val json = result.rows[0].getString(0)
         return if (json === null) {
-            listOf<EntityI>() as List<R>
+            emptyList()
         } else {
             serializer.deserializeList(json, typeReference)
         }.also {
@@ -160,7 +160,7 @@ class Connection(
             }
             val json = firstLine.getString(0)
             val entities = if (json == null) {
-                listOf<EntityI>() as List<R>
+                emptyList()
             } else {
                 serializer.deserializeList(json, typeReference)
             }
@@ -328,7 +328,7 @@ class Connection(
         """
         |$msg
         |
-        |${parameters.joinToString(", ") { it.toString() }.prependIndent("  > ") ?: ""}
+        |${parameters.joinToString(", ") { it.toString() }.prependIndent("  > ")}
         |${sql.prependIndent("  > ")}
         |${result?.let { "-----" }?.prependIndent("  > ") ?: ""}
         |${result?.columnNames()?.joinToString(" | ")?.prependIndent("  > ") ?: ""}
@@ -345,7 +345,7 @@ class Connection(
         """
         |$msg
         |
-        |${parameters.map { ":" + it.key + " = " + it.value }.joinToString(", ").prependIndent("  > ") ?: ""}
+        |${parameters.map { ":" + it.key + " = " + it.value }.joinToString(", ").prependIndent("  > ")}
         |${sql.prependIndent("  > ")}
         |${result?.let { "-----" }?.prependIndent("  > ") ?: ""}
         |${result?.columnNames()?.joinToString(" | ")?.prependIndent("  > ") ?: ""}