diff --git a/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/DecryptionStreamFactory.java b/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/DecryptionStreamFactory.java
index 680f33e4..5e6b2aec 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/DecryptionStreamFactory.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/DecryptionStreamFactory.java
@@ -40,7 +40,6 @@ import org.bouncycastle.openpgp.operator.PBEDataDecryptorFactory;
 import org.bouncycastle.openpgp.operator.PGPContentVerifierBuilderProvider;
 import org.bouncycastle.openpgp.operator.PublicKeyDataDecryptorFactory;
 import org.bouncycastle.openpgp.operator.SessionKeyDataDecryptorFactory;
-import org.graalvm.compiler.lir.amd64.AMD64BinaryConsumer;
 import org.pgpainless.PGPainless;
 import org.pgpainless.algorithm.CompressionAlgorithm;
 import org.pgpainless.algorithm.EncryptionPurpose;
diff --git a/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/OpenPgpMessageInputStream.java b/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/OpenPgpMessageInputStream.java
index 54172e7f..37ccff37 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/OpenPgpMessageInputStream.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/OpenPgpMessageInputStream.java
@@ -29,7 +29,6 @@ import org.bouncycastle.openpgp.PGPPublicKeyEncryptedData;
 import org.bouncycastle.openpgp.PGPPublicKeyRing;
 import org.bouncycastle.openpgp.PGPSecretKey;
 import org.bouncycastle.openpgp.PGPSecretKeyRing;
-import org.bouncycastle.openpgp.PGPSessionKey;
 import org.bouncycastle.openpgp.PGPSignature;
 import org.bouncycastle.openpgp.operator.PBEDataDecryptorFactory;
 import org.bouncycastle.openpgp.operator.PGPContentVerifierBuilderProvider;
@@ -795,7 +794,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
             boolean finished;
             boolean valid;
 
-            public DetachedOrPrependedSignature(PGPSignature signature, PGPPublicKeyRing certificate, long keyId) {
+            DetachedOrPrependedSignature(PGPSignature signature, PGPPublicKeyRing certificate, long keyId) {
                 this.signature = signature;
                 this.certificate = certificate;
                 this.keyId = keyId;
@@ -844,7 +843,7 @@ public class OpenPgpMessageInputStream extends DecryptionStream {
             boolean finished;
             boolean valid;
 
-            public OnePassSignature(PGPOnePassSignature signature, PGPPublicKeyRing certificate, long keyId) {
+            OnePassSignature(PGPOnePassSignature signature, PGPPublicKeyRing certificate, long keyId) {
                 this.opSignature = signature;
                 this.certificate = certificate;
                 this.keyId = keyId;
diff --git a/pgpainless-core/src/test/java/investigations/InvestigateMultiSEIPMessageHandlingTest.java b/pgpainless-core/src/test/java/investigations/InvestigateMultiSEIPMessageHandlingTest.java
index d31a0e0f..a0ea747a 100644
--- a/pgpainless-core/src/test/java/investigations/InvestigateMultiSEIPMessageHandlingTest.java
+++ b/pgpainless-core/src/test/java/investigations/InvestigateMultiSEIPMessageHandlingTest.java
@@ -4,8 +4,6 @@
 
 package investigations;
 
-import static org.junit.jupiter.api.Assertions.assertArrayEquals;
-import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.io.ByteArrayInputStream;
diff --git a/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/PreventDecryptionUsingNonEncryptionKeyTest.java b/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/PreventDecryptionUsingNonEncryptionKeyTest.java
index 7474301b..ba80c69d 100644
--- a/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/PreventDecryptionUsingNonEncryptionKeyTest.java
+++ b/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/PreventDecryptionUsingNonEncryptionKeyTest.java
@@ -8,8 +8,6 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.EOFException;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;