diff --git a/build.gradle b/build.gradle
index ca47f99..b174a86 100644
--- a/build.gradle
+++ b/build.gradle
@@ -31,7 +31,7 @@ dependencies {
         exclude group: 'org.hamcrest', module: 'hamcrest-core'
         exclude group: 'junit', module: 'junit'
     }
-    implementation ('org.bouncycastle:bcprov-jdk15on:1.64') {
+    implementation ('org.bouncycastle:bcprov-jdk18on:1.77') {
         exclude group: 'org.hamcrest', module: 'hamcrest-core'
     }
     implementation ('de.mkammerer:argon2-jvm:2.11') {
@@ -40,16 +40,13 @@ dependencies {
         exclude group: 'net.java.dev.jna', module: 'jna'
     }
     implementation ('net.java.dev.jna:jna:5.8.0')
-    implementation ('ch.qos.logback:logback-classic:1.2.8') {
+    implementation ('ch.qos.logback:logback-classic:1.4.14') {
         exclude group: 'org.hamcrest', module: 'hamcrest-core'
         exclude group: 'org.slf4j'
     }
-    implementation ('org.slf4j:slf4j-api:1.7.30')
-    testImplementation ('junit:junit:4.12') {
-        exclude group: 'org.hamcrest', module: 'hamcrest-core'
-    }
-    testImplementation group: 'org.hamcrest', name: 'hamcrest-core', version: '2.2'
-    testImplementation 'junit:junit:4.13.1'
+    implementation ('org.slf4j:slf4j-api:2.0.12')
+    testImplementation('org.junit.jupiter:junit-jupiter-api:5.10.0')
+    testImplementation('org.junit.vintage:junit-vintage-engine:5.10.0')
 }
 
 processResources {
@@ -61,25 +58,10 @@ processResources {
 }
 
 extraJavaModuleInfo {
-    module('logback-core-1.2.8.jar', 'logback.core', '1.2.8') {
-        exports('ch.qos.logback.core')
-        exports('ch.qos.logback.core.spi')
-        requires('java.xml')
-    }
-    module('logback-classic-1.2.8.jar', 'logback.classic', '1.2.8') {
-        exports('ch.qos.logback.classic')
-        exports('ch.qos.logback.classic.spi')
-        requires('org.slf4j')
-        requires('logback.core')
-        requires('java.xml')
-        requires('java.logging')
-    }
     module('json-simple-1.1.1.jar', 'json.simple', '1.1.1') {
         exports('org.json.simple')
         exports('org.json.simple.parser')
     }
     module('jnacl-1.0.0.jar', 'eu.neilalexander.jnacl', '1.0.0')
-    module('junit-4.12.jar', 'junit', '4.12') {
-        exports('org.junit')
-    }
+    module('hamcrest-core-1.3.jar', 'org.hamcrest.core', '1.3')
 }
diff --git a/src/main/java/com/sparrowwallet/drongo/crypto/AESKeyCrypter.java b/src/main/java/com/sparrowwallet/drongo/crypto/AESKeyCrypter.java
index 48d2a5a..35b4baa 100644
--- a/src/main/java/com/sparrowwallet/drongo/crypto/AESKeyCrypter.java
+++ b/src/main/java/com/sparrowwallet/drongo/crypto/AESKeyCrypter.java
@@ -41,7 +41,7 @@ public class AESKeyCrypter implements KeyCrypter {
             ParametersWithIV keyWithIv = new ParametersWithIV(new KeyParameter(aesKey.getKeyBytes()), dataToDecrypt.getInitialisationVector());
 
             // Decrypt the message.
-            BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()));
+            BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(CBCBlockCipher.newInstance(AESEngine.newInstance()));
             cipher.init(false, keyWithIv);
 
             byte[] cipherBytes = dataToDecrypt.getEncryptedBytes();
@@ -79,7 +79,7 @@ public class AESKeyCrypter implements KeyCrypter {
             ParametersWithIV keyWithIv = new ParametersWithIV(new KeyParameter(aesKey.getKeyBytes()), iv);
 
             // Encrypt using AES.
-            BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()));
+            BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(CBCBlockCipher.newInstance(AESEngine.newInstance()));
             cipher.init(true, keyWithIv);
             byte[] encryptedBytes = new byte[cipher.getOutputSize(plainBytes.length)];
             final int length1 = cipher.processBytes(plainBytes, 0, plainBytes.length, encryptedBytes, 0);
diff --git a/src/main/java/com/sparrowwallet/drongo/crypto/ECKey.java b/src/main/java/com/sparrowwallet/drongo/crypto/ECKey.java
index bcf6c0b..676e193 100644
--- a/src/main/java/com/sparrowwallet/drongo/crypto/ECKey.java
+++ b/src/main/java/com/sparrowwallet/drongo/crypto/ECKey.java
@@ -552,7 +552,7 @@ public class ECKey {
                 throw new IllegalArgumentException("Input has 'publicKey' with bad tag number");
             }
 
-            byte[] pubbits = ((DERBitString)pubkey.getObject()).getBytes();
+            byte[] pubbits = ((DERBitString)pubkey.getBaseObject()).getBytes();
             if(pubbits.length != 33 && pubbits.length != 65) {
                 throw new IllegalArgumentException("Input has 'publicKey' with invalid length");
             };
diff --git a/src/main/java/module-info.java b/src/main/java/module-info.java
index 5ce479c..9c6dfe9 100644
--- a/src/main/java/module-info.java
+++ b/src/main/java/module-info.java
@@ -2,8 +2,8 @@ open module com.sparrowwallet.drongo {
     requires org.bouncycastle.provider;
     requires de.mkammerer.argon2.nolibs;
     requires org.slf4j;
-    requires logback.core;
-    requires logback.classic;
+    requires ch.qos.logback.core;
+    requires ch.qos.logback.classic;
     requires json.simple;
     exports com.sparrowwallet.drongo;
     exports com.sparrowwallet.drongo.psbt;