diff --git a/Pipfile b/Pipfile
index 80745a1..ce5a684 100644
--- a/Pipfile
+++ b/Pipfile
@@ -5,6 +5,6 @@ name = "pypi"
 
 # keep in sync with pyproject.toml
 [packages]
-blake3 = ">=0.3.4"
+blake3 = ">=0.4.1"
 
 [dev-packages]
diff --git a/Pipfile.lock b/Pipfile.lock
index 2e4c3a8..4a38624 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "e8cd87a62cdc293b2cab0606525f4eb3bdfeb4f0373a64a5be10685b235d1078"
+            "sha256": "6a7ad512a1990bc8991ddf430c56fc28969cd9656fb1e1e14fbec9fc51a9e364"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -16,39 +16,39 @@
     "default": {
         "blake3": {
             "hashes": [
-                "sha256:01787135e4003c41e9a07f6d83396a54bb1ace07758f0a4a8d446699ab18c489",
-                "sha256:0d53c8f129e4f76dba7c255633403c3fa8d390f61fa09ea7a530c987e2c62de6",
-                "sha256:13d4830e3c0d178784588594cb6f15b1c905efbb848db0f6be2519f87f2407ac",
-                "sha256:1a2671602aad7d2078ccb1c2d9b670dd7b4733a452898d77dc63472dea7b6933",
-                "sha256:22ae74485e0148be2a751e0689e74c345d209a12a8bc6332067f887cc46148c8",
-                "sha256:24868e2cb41feeb37286981afcc214242adfeba6a40ba773daf45168e80f76e0",
-                "sha256:25fce3f5f8b69c8655864cbc2a210c4df4779c8bedcc71ef0e45823c510b26ba",
-                "sha256:269e1f20c412c5cc28db3461f24dcc6f5915cdf1335538a7146d92af8f001bb3",
-                "sha256:29ae9df9b7f2a08935cf24a9b6637327ac988f1f26e54e6b1b137a00ec57a35e",
-                "sha256:42136484a1df1a8ba7efc901b44b8ff78b7d3c99f59fe109dad1c23d15c7e9a5",
-                "sha256:448bc6b96139c9061c6882c66d0dabf1bba354e01ac865f38bff1e5a9ad11748",
-                "sha256:4b7ef354144a2a19d7dbbfebce11735f68154e5190f9cc53825237bdb1bb78af",
-                "sha256:4e0c86416cb05bfbb90c6dcbe3d670bc3280791746374456b342114adb43253b",
-                "sha256:4ee1b49badfcddabe9f0c557105c0efa003043efea5573873f764d9726526c26",
-                "sha256:4fee299071879a2983bd7e5c560e303ef063238c557d6b11c5d59b03cad847ad",
-                "sha256:56f2bd6893139c468cf6f700ef34b16f33ed58b036d0f3d5aeb35c4a9a00fb98",
-                "sha256:5cedb4b5c69e5c35d96b6f567152358977f906b822b097c2113f8c355ce7885a",
-                "sha256:6628f15a8d6fe39c729f4924c44248f9caf3aecdaa110b69b1c09db5d42be5b1",
-                "sha256:772899b8cc1af8703956d9c4c175318fca64edede7f0a7379db3b515925e0f34",
-                "sha256:a1affb1fad469bc453e9e73f7335ece80c90bd4ef533f07ea643a91a89f71d0c",
-                "sha256:a3b3c3d596bc35bd6a56ea8554d3bc9ba3bdbc1edfa0a889a7cffd3925eaf18a",
-                "sha256:a871b60ffbc61b9b487ff7e8f9f918cc1da24cb5b87a58c983b3b242e665dedc",
-                "sha256:ae1b8e6d584231ad32fb39920e4044f38f6f2d85ce64c433fadd8baf6981b772",
-                "sha256:b59d62e3cb2d68b2318b53b5d08443e6693f428ddc6a1d7b423a266f9774a4f0",
-                "sha256:b9072cfa473ff3b659179bd6a600b6d07259221029d2d8d0595a576958e8bf16",
-                "sha256:bf2fa57a752364586739c2dcff4c604e745cee603ee43b24faa0d1369f8e7a81",
-                "sha256:c29a31f0e8eb5e34503296be966a54c0fe5ab34d57f9594bc761ffc549fc4d39",
-                "sha256:c8ea8fd94e0ee879ca623258b751f9427b3f20da228e55f1b491fedbdeb57ab8",
-                "sha256:d4626e6f0af151d157c1c9a03bb0bd65b5661c745c6cccef212f28c7ce7fc07b",
-                "sha256:e140c339873479bbc114456760ed1a7a28062c3ca7c54575a2a3ecc661efdb0e"
+                "sha256:0625c8679203d5a1d30f859696a3fd75b2f50587984690adab839ef112f4c043",
+                "sha256:0c3ce6142e385222f6de5312a9fb886270b7e63d9ffaa792571b03c4c83a7521",
+                "sha256:1a086cc9401fb0b09f9b4ba14444457d9b04a6d8086cd96b45ebf252afc49109",
+                "sha256:283860fe58b3a6d74e5be1ece78bbcd7de819b48476d7a534b989dd6ab49a083",
+                "sha256:2a08eeb324da701b212f348e91ba5d2708c0a596bd6691207f2504f4f771644c",
+                "sha256:34d7da38898ad4e0da7b8fe0bffb8c9d2788093ec202e01cd3ab24bc14049153",
+                "sha256:3cc656cab955ab6c18b587a8b4faa33930fea089981f76a7c64f33e4a26c1dac",
+                "sha256:46ffb411a477009dfa99a592d4408e43ff885ea7df30ed8c8f284e87866be56e",
+                "sha256:47316bdc9b4689601cefcc63e00a3e015cee1fa9864463be2b4f2e12473cb47f",
+                "sha256:4d99136b7f7c8adcee0f7484e74b159fd3ea58e7d1e94d5351f0e98d9cfc522f",
+                "sha256:510fd32d207ef2e28df3597847d5044117d110b0e549b2e467afa30a9f3ab7ee",
+                "sha256:796e65ae333831bafed5969c691ac806fe4957b6f39e52b4c3cf20f3c00c576f",
+                "sha256:87a9fc37260d355569f0be751e0054e0b37e6a4ec022f4b7107ffeede419dde2",
+                "sha256:931d1d0d4650a400838a7f1bf0d260209d10e9bd1981a6ed033f32361b96ab7b",
+                "sha256:9633e0198174eb77196f9f8b18d75449d86e8fa234727c98d685d5404f84eb8e",
+                "sha256:a51f48ec21706a22b4954fc17da72bd177d82d22ee434da0c5dc3aafeef5b8d3",
+                "sha256:a6c555d882117d638830b2f5f0fd9980bcd63286ad4c9959bc16b3df77042d6f",
+                "sha256:a73c5940454bd693d7172af8fad23019c2f5a9b910ed961c20bdf5a91babd9f2",
+                "sha256:a95cce3e8bfd7e717f901de80068ee4b5c77dc421f83eef00cf3eddd3ec8b87a",
+                "sha256:aa4989ea8f8bcfa057e50014b5b26cd8cfe0b1f06aa98d433976f45caf3a5580",
+                "sha256:c6c50122d9484a97a56888f09fcbbd23fdba94c4bf1e6fdeb036b17accae9f0c",
+                "sha256:d264ca87f0990f44985cf580b493508534dc6e72ace52a140cf725e42d602695",
+                "sha256:d51b3da140d04cd8b680bf2b3a5dc1f0cbb4f1e62b08e3d6f3b17d75b6285c41",
+                "sha256:d653623361da8db3406f4a90b39d38016f9f678e22099df0d5f8ab77efb7b4ae",
+                "sha256:e0fc4914750b63bbb15f71b2092a75b24a63fd86f6fbd621a8c133795f3d6371",
+                "sha256:ef534c59ae76faba1c7e1531930dadecaa7817e25aa6e6c825150c04ed243a3d",
+                "sha256:f8fa53818f1170611d781aadbcae809ecc2334679212b4a4b3feabb55deb594d",
+                "sha256:fb6a62ef04c5ec4dd4630615c6a22ddab16eb0b7887276b3449946c12eeb37a2",
+                "sha256:fb98f18bc5e218ff1134acb3b9f0e3588ad5e6f38b7279cce4559c8ae9d780e6",
+                "sha256:fe31163eb08fc3f82a2325e90cea88f2d7ad0265314a03de716f906b2a43be96"
             ],
             "index": "pypi",
-            "version": "==0.3.4"
+            "version": "==0.4.1"
         }
     },
     "develop": {}
diff --git a/pyproject.toml b/pyproject.toml
index f452234..8c02767 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "chkbit"
-version = "4.1.0"
+version = "4.2.0"
 description = "chkbit checks the data integrity of your files"
 authors = [
     {name = "Christian Zangl", email = "laktak@cdak.net"},
@@ -8,7 +8,7 @@ authors = [
 
 # keep in sync with Pipfile
 dependencies = [
-  "blake3>=0.3.4",
+  "blake3>=0.4.1",
 ]
 requires-python = ">=3.7.0"
 readme = "README.md"