diff --git a/pgpainless-core/src/main/java/org/pgpainless/encryption_signing/BcPGPHashContextContentSignerBuilder.java b/pgpainless-core/src/main/java/org/pgpainless/encryption_signing/BcPGPHashContextContentSignerBuilder.java
index 474ee9ef..df6f6ca3 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/encryption_signing/BcPGPHashContextContentSignerBuilder.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/encryption_signing/BcPGPHashContextContentSignerBuilder.java
@@ -42,7 +42,7 @@ class BcPGPHashContextContentSignerBuilder extends PGPHashContextContentSignerBu
     private final MessageDigest messageDigest;
     private final HashAlgorithm hashAlgorithm;
 
-    public BcPGPHashContextContentSignerBuilder(MessageDigest messageDigest) {
+    BcPGPHashContextContentSignerBuilder(MessageDigest messageDigest) {
         this.messageDigest = messageDigest;
         this.hashAlgorithm = HashAlgorithm.fromName(messageDigest.getAlgorithm());
         if (hashAlgorithm == null) {