diff --git a/cryptsetup.changes b/cryptsetup.changes
index 91207e3..bb88f9b 100644
--- a/cryptsetup.changes
+++ b/cryptsetup.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Aug  3 13:42:20 UTC 2021 - Ludwig Nussel <lnussel@suse.de>
+
+- need to use PBKDF2 by default for LUKS2 as grub can't decrypt when
+  using Argon.
+
 -------------------------------------------------------------------
 Mon Aug  2 14:43:51 UTC 2021 - Ludwig Nussel <lnussel@suse.de>
 
@@ -17,7 +23,6 @@ Mon Aug  2 14:43:51 UTC 2021 - Ludwig Nussel <lnussel@suse.de>
   * Rewritten command-line option parsing to avoid libpopt arguments
     memory leaks.
   * Add --test-args option.
-- switch to LUKS2 default format
 
 -------------------------------------------------------------------
 Mon Aug  2 12:39:40 UTC 2021 - Fabian Vogt <fvogt@suse.com>
diff --git a/cryptsetup.spec b/cryptsetup.spec
index 3f64d42..345990c 100644
--- a/cryptsetup.spec
+++ b/cryptsetup.spec
@@ -140,6 +140,7 @@ autoreconf -f -i
 %if %{?suse_version} < 1550
   --with-default-luks-format=LUKS1 \
 %endif
+  --with-luks2-pbkdf=pbkdf2 \
   --with-luks2-lock-path=/run/cryptsetup \
   --with-tmpfilesdir='%{_tmpfilesdir}'
 %make_build