diff --git a/Makefile b/Makefile
index 4f7f4ef..a5868fe 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 # Makefile for preparing files for distribution
-VERSION=1.3.1
+VERSION=1.3.1.1
 
 
 .PHONY: distribution release test mkdirs clean cleanall cleantest webmanual
diff --git a/latexdiff b/latexdiff
index 110ca3b..1b40e5e 100755
--- a/latexdiff
+++ b/latexdiff
@@ -31,7 +31,9 @@
 ###  - move --show-xxx options so that they are also capable of showing preamble (and commands) after all modificationsbased on source file packages
 ###  - change meaning of --packages option such that this packages are used in addition of automatically detected packages (possibly introduce option --only-packages that overrides automatic choices completely
 
-
+# Version 1.3.1.1
+#  - remove spurious \n to fix error: Unknown regexp modifier "/n" at .../latexdiff line 1974, near "=~ " (see github issue #201)
+#
 # Version 1.3.1 
 #    Bug fixes:
 #      - remove some uninitialised variable $2 warnings in string substitution in flatten function in case included file is not found
@@ -210,7 +212,7 @@ my ($algodiffversion)=split(/ /,$Algorithm::Diff::VERSION);
 
 
 my ($versionstring)=<<EOF ;
-This is LATEXDIFF 1.3.2a  (Algorithm::Diff $Algorithm::Diff::VERSION, Perl $^V)
+This is LATEXDIFF 1.3.1.1 (Algorithm::Diff $Algorithm::Diff::VERSION, Perl $^V)
   (c) 2004-2020 F J Tilmann
 EOF
 
diff --git a/latexdiff-vc b/latexdiff-vc
index 7024746..500831d 100755
--- a/latexdiff-vc
+++ b/latexdiff-vc
@@ -71,7 +71,7 @@ use strict ;
 use warnings ;
 
 my $versionstring=<<EOF ;
-This is LATEXDIFF-VC 1.3.2a
+This is LATEXDIFF-VC 1.3.1.1
   (c) 2005-2020 F J Tilmann
 EOF
 
diff --git a/latexrevise b/latexrevise
index 715194a..ecd8642 100755
--- a/latexrevise
+++ b/latexrevise
@@ -33,7 +33,7 @@ use strict;
 use warnings;
 
 my $versionstring=<<EOF ;
-This is LATEXREVISE 1.3.1
+This is LATEXREVISE 1.3.1.1
   (c) 2005-2020 F J Tilmann
 EOF