diff --git a/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/MessageInspectorTest.java b/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/MessageInspectorTest.java
index dd47ec4b..b7382360 100644
--- a/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/MessageInspectorTest.java
+++ b/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/MessageInspectorTest.java
@@ -33,7 +33,7 @@ public class MessageInspectorTest {
         assertFalse(info.isSignedOnly());
         assertTrue(info.isEncrypted());
         assertEquals(1, info.getKeyIds().size());
-        assertEquals(KeyIdUtil.fromLongKeyId("4766F6B9D5F21EB6"), info.getKeyIds().get(0));
+        assertEquals(KeyIdUtil.fromLongKeyId("4766F6B9D5F21EB6"), (long) info.getKeyIds().get(0));
     }
 
     @Test
diff --git a/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/VerifyWithMissingPublicKeyCallback.java b/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/VerifyWithMissingPublicKeyCallback.java
index e4e9427b..bcbad822 100644
--- a/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/VerifyWithMissingPublicKeyCallback.java
+++ b/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/VerifyWithMissingPublicKeyCallback.java
@@ -66,7 +66,7 @@ public class VerifyWithMissingPublicKeyCallback {
                             @Nullable
                             @Override
                             public PGPPublicKeyRing onMissingPublicKeyEncountered(@Nonnull Long keyId) {
-                                assertEquals(signingKey.getKeyID(), keyId, "Signing key-ID mismatch.");
+                                assertEquals(signingKey.getKeyID(), (long) keyId, "Signing key-ID mismatch.");
                                 return signingPubKeys;
                             }
                         }));
diff --git a/pgpainless-core/src/test/java/org/pgpainless/key/protection/CachingSecretKeyRingProtectorTest.java b/pgpainless-core/src/test/java/org/pgpainless/key/protection/CachingSecretKeyRingProtectorTest.java
index 6c103ea3..d1f5f9e6 100644
--- a/pgpainless-core/src/test/java/org/pgpainless/key/protection/CachingSecretKeyRingProtectorTest.java
+++ b/pgpainless-core/src/test/java/org/pgpainless/key/protection/CachingSecretKeyRingProtectorTest.java
@@ -129,7 +129,7 @@ public class CachingSecretKeyRingProtectorTest {
 
             Passphrase passphrase = withCallback.getPassphraseFor(x);
             assertNotNull(passphrase);
-            assertEquals(doubled, Long.valueOf(new String(passphrase.getChars())));
+            assertEquals(doubled, (long) Long.valueOf(new String(passphrase.getChars())));
         }
     }