diff --git a/usr/lib/archboot/iso.sh b/usr/lib/archboot/iso.sh
index 02922092f..554874608 100644
--- a/usr/lib/archboot/iso.sh
+++ b/usr/lib/archboot/iso.sh
@@ -259,11 +259,11 @@ _reproducibility_iso() {
 }
 
 _create_cksum() {
-    ## create sha256sums.txt
-    echo "Generating sha256sum..."
-    [[ -f  "sha256sums.txt" ]] && rm "sha256sums.txt"
-    [[ "$(echo ./*.iso)" == "./*.iso" ]] || cksum -a sha256 ./*.iso > "sha256sums.txt"
-    [[ "$(echo ./*.img)" == "./*.img" ]] || cksum -a sha256 ./*.img > "sha256sums.txt"
+    ## create b2sums.txt
+    echo "Generating b2sum..."
+    [[ -f  "b2sums.txt" ]] && rm "b2sums.txt"
+    [[ "$(echo ./*.iso)" == "./*.iso" ]] || cksum -a blake2b ./*.iso > "b2sums.txt"
+    [[ "$(echo ./*.img)" == "./*.img" ]] || cksum -a blake2b ./*.img > "b2sums.txt"
 }
 
 _cleanup_iso() {
diff --git a/usr/lib/archboot/release.sh b/usr/lib/archboot/release.sh
index 0984b6048..f1bdb6fbf 100644
--- a/usr/lib/archboot/release.sh
+++ b/usr/lib/archboot/release.sh
@@ -153,16 +153,16 @@ _create_iso() {
     # removing container
     echo "Removing container ${_W_DIR}..."
     rm -r "${_W_DIR}"
-    # create sha256sums
-    echo "Generating sha256sum..."
+    # create b2sums
+    echo "Generating b2sum..."
     for i in *; do
         if [[ -f "${i}" ]]; then
-            cksum -a sha256 "${i}" >> sha256sum.txt
+            cksum -a blake2b "${i}" >> b2sum.txt
         fi
     done
     for i in boot/*; do
         if [[ -f "${i}" ]]; then
-            cksum -a sha256 "${i}" >> sha256sum.txt
+            cksum -a blake2b "${i}" >> b2sum.txt
         fi
     done
 }
diff --git a/usr/lib/archboot/server.sh b/usr/lib/archboot/server.sh
index 8c47fb17b..861d98b74 100644
--- a/usr/lib/archboot/server.sh
+++ b/usr/lib/archboot/server.sh
@@ -78,16 +78,16 @@ _create_archive() {
     [[ -d "${_DIR}" ]] && mv "${_DIR}" archive/
 }
 
-# sign files and create new sha256sum.txt
-_sign_sha256sum() {
+# sign files and create new b2sum.txt
+_sign_b2sum() {
     for i in $1; do
         #shellcheck disable=SC2086
         if [[ -f "${i}" ]]; then
             sudo -u "${_USER}" gpg ${_GPG} "${i}"
-            cksum -a sha256 "${i}" >> sha256sum.txt
+            cksum -a blake2b "${i}" >> b2sum.txt
         fi
         if [[ -f "${i}.sig" ]]; then
-            cksum -a sha256 "${i}.sig" >> sha256sum.txt
+            cksum -a blake2b "${i}.sig" >> b2sum.txt
         fi
     done
 }
@@ -109,10 +109,10 @@ _server_release() {
     chmod 755 "${_ISO_BUILD_DIR}"
     chown -R "${_USER}:${_GROUP}" "${_ISO_BUILD_DIR}"
     cd "${_ISO_BUILD_DIR}" || exit 1
-    # removing sha256sum
-    rm sha256sum.txt
-    _sign_sha256sum "*"
-    _sign_sha256sum "boot/*"
+    # removing b2sum
+    rm b2sum.txt
+    _sign_b2sum "*"
+    _sign_b2sum "boot/*"
     chown -R "${_USER}:${_GROUP}" ./*
     cd ..
     _create_archive