diff --git a/pom.xml b/pom.xml
index fe4df341..94950ec4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -56,31 +56,31 @@
         <dependency>
             <groupId>org.junit.platform</groupId>
             <artifactId>junit-platform-launcher</artifactId>
-            <version>1.6.2</version>
+            <version>1.8.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
-            <version>5.6.2</version>
+            <version>5.8.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-params</artifactId>
-            <version>5.6.2</version>
+            <version>5.8.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.junit.vintage</groupId>
             <artifactId>junit-vintage-engine</artifactId>
-            <version>5.6.2</version>
+            <version>5.8.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
-            <version>3.16.1</version>
+            <version>3.22.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -91,30 +91,30 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>3.3.3</version>
+            <version>4.3.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>io.cucumber</groupId>
             <artifactId>cucumber-java8</artifactId>
-            <version>5.7.0</version>
+            <version>7.2.3</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>io.cucumber</groupId>
             <artifactId>cucumber-junit</artifactId>
-            <version>5.7.0</version>
+            <version>7.2.3</version>
             <scope>test</scope>
         </dependency>
         <dependency><!-- override the version under cloudant-client -->
             <groupId>commons-codec</groupId>
             <artifactId>commons-codec</artifactId>
-            <version>1.14</version>
+            <version>1.15</version>
         </dependency>
         <dependency>
             <groupId>com.ibm.cloud</groupId>
             <artifactId>cloudant</artifactId>
-            <version>0.0.32</version>
+            <version>0.0.34</version>
         </dependency>
     </dependencies>
 
@@ -263,7 +263,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-checkstyle-plugin</artifactId>
-                <version>3.1.0</version>
+                <version>3.1.2</version>
                 <configuration>
                     <configLocation>checkstyle.xml</configLocation>
                     <encoding>UTF-8</encoding>
@@ -276,7 +276,7 @@
                     <dependency>
                         <groupId>com.puppycrawl.tools</groupId>
                         <artifactId>checkstyle</artifactId>
-                        <version>8.30</version>
+                        <version>9.3</version>
                     </dependency>
                 </dependencies>
                 <executions>
diff --git a/src/main/java/org/hyperledger/fabric/gateway/impl/identity/WalletImpl.java b/src/main/java/org/hyperledger/fabric/gateway/impl/identity/WalletImpl.java
index d48ff363..c360846a 100644
--- a/src/main/java/org/hyperledger/fabric/gateway/impl/identity/WalletImpl.java
+++ b/src/main/java/org/hyperledger/fabric/gateway/impl/identity/WalletImpl.java
@@ -64,15 +64,16 @@ private InputStream serializeJson(final JsonObject identityJson) {
 
     @Override
     public Identity get(final String label) throws IOException {
-        final InputStream identityData = store.get(label);
-        if (identityData == null) {
-            return null;
-        }
+        try (InputStream identityData = store.get(label)) {
+            if (identityData == null) {
+                return null;
+            }
 
-        try {
-            return deserializeIdentity(identityData);
-        } catch (RuntimeException e) {
-            throw new IOException(e);
+            try {
+                return deserializeIdentity(identityData);
+            } catch (RuntimeException e) {
+                throw new IOException(e);
+            }
         }
     }
 
diff --git a/src/test/java/org/hyperledger/fabric/gateway/impl/TransactionTest.java b/src/test/java/org/hyperledger/fabric/gateway/impl/TransactionTest.java
index 2914f283..f79e2924 100644
--- a/src/test/java/org/hyperledger/fabric/gateway/impl/TransactionTest.java
+++ b/src/test/java/org/hyperledger/fabric/gateway/impl/TransactionTest.java
@@ -17,7 +17,6 @@
 
 import org.hyperledger.fabric.gateway.Contract;
 import org.hyperledger.fabric.gateway.ContractException;
-import org.hyperledger.fabric.gateway.DefaultCommitHandlers;
 import org.hyperledger.fabric.gateway.Gateway;
 import org.hyperledger.fabric.gateway.GatewayException;
 import org.hyperledger.fabric.gateway.Network;
@@ -29,17 +28,16 @@
 import org.hyperledger.fabric.sdk.HFClient;
 import org.hyperledger.fabric.sdk.Peer;
 import org.hyperledger.fabric.sdk.ProposalResponse;
-import org.hyperledger.fabric.sdk.QueryByChaincodeRequest;
 import org.hyperledger.fabric.sdk.TransactionProposalRequest;
-import org.hyperledger.fabric.sdk.TransactionRequest;
-import org.hyperledger.fabric.sdk.User;
 import org.hyperledger.fabric.sdk.transaction.TransactionContext;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Captor;
-import org.mockito.MockitoAnnotations;
+import org.mockito.Mockito;
+import org.mockito.MockitoSession;
+import org.mockito.quality.Strictness;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
@@ -57,6 +55,7 @@
 public class TransactionTest {
     private final TestUtils testUtils = TestUtils.getInstance();
     private final TimePeriod timeout = new TimePeriod(7, TimeUnit.DAYS);
+    private MockitoSession mockitoSession;
     private Gateway.Builder gatewayBuilder;
     private Gateway gateway;
     private Channel channel;
@@ -79,7 +78,10 @@ public class TransactionTest {
 
     @BeforeEach
     public void setup() throws Exception {
-        MockitoAnnotations.initMocks(this);
+        mockitoSession = Mockito.mockitoSession()
+                .initMocks(this)
+                .strictness(Strictness.LENIENT)
+                .startMocking();
 
         peer1 = testUtils.newMockPeer("peer1");
         peer2 = testUtils.newMockPeer("peer2");
@@ -117,6 +119,7 @@ public CommitHandler create(final String transactionId, final Network network) {
     @AfterEach
     public void afterEach() {
         gateway.close();
+        mockitoSession.finishMocking();
     }
 
     @Test
diff --git a/src/test/java/scenario/RunScenarioTest.java b/src/test/java/scenario/RunScenarioTest.java
index 1ebcf0df..94b0feb1 100644
--- a/src/test/java/scenario/RunScenarioTest.java
+++ b/src/test/java/scenario/RunScenarioTest.java
@@ -6,6 +6,6 @@
 import io.cucumber.junit.CucumberOptions;
 
 @RunWith(Cucumber.class)
-@CucumberOptions(plugin = {"pretty"}, strict = true)
+@CucumberOptions(plugin = {"pretty"})
 public class RunScenarioTest {
 }