diff --git a/lib/miga/common/format.rb b/lib/miga/common/format.rb
index a010f60..cdc6b6d 100644
--- a/lib/miga/common/format.rb
+++ b/lib/miga/common/format.rb
@@ -51,7 +51,7 @@ def clean_fasta_file(file, min_len = 1)
           end
           next_seq = [">#{id.gsub(/[^A-Za-z0-9_\|\.]/, '_')}#{df}", '']
         else
-          next_seq[1] += ln.gsub(/[^A-Za-z\.\-]/, '')
+          next_seq[1] += ln.gsub(/[^A-Za-z]/, '')
         end
       end
       if next_seq[1].length >= min_len
diff --git a/lib/miga/daemon/base.rb b/lib/miga/daemon/base.rb
index 58ed92e..46e31c6 100644
--- a/lib/miga/daemon/base.rb
+++ b/lib/miga/daemon/base.rb
@@ -59,7 +59,7 @@ def skip_maintenance
 
   ##
   # Returns the running option +opt+ in jobs for +what+. +what+ can be
-  # +:dataset+ or +:projects+
+  # +:dataset+ or +:project+
   def runopts_for(opt, what)
     runopts(:"#{opt}_#{what}") || runopts(opt)
   end
diff --git a/lib/miga/version.rb b/lib/miga/version.rb
index 375d0b0..483dc77 100644
--- a/lib/miga/version.rb
+++ b/lib/miga/version.rb
@@ -12,7 +12,7 @@ module MiGA
   # - String indicating release status:
   #   - rc* release candidate, not released as gem
   #   - [0-9]+ stable release, released as gem
-  VERSION = [1.3, 21, 3].freeze
+  VERSION = [1.3, 21, 4].freeze
 
   ##
   # Nickname for the current major.minor version.
@@ -20,7 +20,7 @@ module MiGA
 
   ##
   # Date of the current gem relese.
-  VERSION_DATE = Date.new(2024, 9, 28)
+  VERSION_DATE = Date.new(2024, 12, 23)
 
   ##
   # References of MiGA