diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 294d7f6a..e57a6e6b 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -104,7 +104,7 @@ spring-boot-starter-actuator = { module = "org.springframework.boot:spring-boot-
 
 spring-boot-starter-test = { module = "org.springframework.boot:spring-boot-starter-test", version.ref = "spring-boot" }
 
-testcontainers = "org.testcontainers:testcontainers:1.21.3"
+testcontainers = "org.testcontainers:testcontainers:2.0.3"
 testcontainers-ganache = "io.github.ganchix:testcontainers-java-module-ganache:0.0.4"
 
 assertj = "org.assertj:assertj-core:3.23.1"
diff --git a/src/main/kotlin/io/emeraldpay/dshackle/monitoring/MonitoringSetup.kt b/src/main/kotlin/io/emeraldpay/dshackle/monitoring/MonitoringSetup.kt
index 9dff631a..acff2f92 100644
--- a/src/main/kotlin/io/emeraldpay/dshackle/monitoring/MonitoringSetup.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/monitoring/MonitoringSetup.kt
@@ -60,7 +60,7 @@ class MonitoringSetup(
                 serverSocket.bind(InetSocketAddress(InetAddress.getByName(host), port), 1)
                 return true
             }
-        } catch (ex: java.lang.Exception) {
+        } catch (e: java.lang.Exception) {
             return false
         }
     }