diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,5 @@
+V 1.5.1.3: added possibility to parse allele names 01234 in bim files.
+
 V 1.5.1.2: added readPlink to export list of Plink module.
 
 V 1.5.1: minor updates for hackage
diff --git a/sequence-formats.cabal b/sequence-formats.cabal
--- a/sequence-formats.cabal
+++ b/sequence-formats.cabal
@@ -1,5 +1,5 @@
 name:                sequence-formats
-version:             1.5.1.2
+version:             1.5.1.3
 synopsis:            A package with basic parsing utilities for several Bioinformatic data formats.
 description:         Contains utilities to parse and write Eigenstrat, Fasta, FreqSum, VCF, Plink and other file formats used in population genetics analyses.
 license:             GPL-3
diff --git a/src/SequenceFormats/Plink.hs b/src/SequenceFormats/Plink.hs
--- a/src/SequenceFormats/Plink.hs
+++ b/src/SequenceFormats/Plink.hs
@@ -36,8 +36,8 @@
     snpId_     <- A.skipMany1 A.space >> word
     geneticPos <- A.skipMany1 A.space >> A.double
     pos        <- A.skipMany1 A.space >> A.decimal
-    ref        <- A.skipMany1 A.space >> A.satisfy (A.inClass "ACTGN")
-    alt        <- A.skipMany1 A.space >> A.satisfy (A.inClass "ACTGX")
+    ref        <- A.skipMany1 A.space >> A.satisfy (A.inClass "ACTGN01234")
+    alt        <- A.skipMany1 A.space >> A.satisfy (A.inClass "ACTGX01234")
     void A.endOfLine
     return $ EigenstratSnpEntry (Chrom chrom) pos geneticPos snpId_ ref alt