diff --git a/perl-PPI.spec b/perl-PPI.spec
index a2cd70e..0897772 100644
--- a/perl-PPI.spec
+++ b/perl-PPI.spec
@@ -6,7 +6,7 @@
 %endif
 
 Name:           perl-PPI
-Version:        1.265
+Version:        1.266
 Release:        1%{?dist}
 Summary:        Parse, Analyze and Manipulate Perl
 License:        GPL+ or Artistic
@@ -78,6 +78,9 @@ rm lib/PPI/XSAccessor.pm
 sed -i '/^lib\/PPI\/XSAccessor\.pm$/d' MANIFEST
 %endif
 
+# Fix test data (https://github.com/adamkennedy/PPI/issues/243)
+sed -i -e 's/\r$//' t/data/08_regression/*heredoc*
+
 %build
 perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1 NO_PERLLOCAL=1
 %{make_build}
@@ -97,6 +100,13 @@ make test
 %{_mandir}/man3/PPI*.3*
 
 %changelog
+* Thu May 16 2019 Paul Howarth <paul@city-fan.org> - 1.266-1
+- Update to 1.266
+  - Prevent heredoc terminator detection triggering regex errors
+  - Small clean-ups
+- Work around test failures caused by DOS line endings in test data files
+  (https://github.com/adamkennedy/PPI/issues/243)
+
 * Wed May 15 2019 Paul Howarth <paul@city-fan.org> - 1.265-1
 - Update to 1.265
   - Simplified a code construct
diff --git a/sources b/sources
index f0ced34..7d94797 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (PPI-1.265.tar.gz) = b99d060554f3d3e4d752141205a9415ec11b2964f1d45655bad5a2448152b8a5256b5d6f6604ebad0b6e9d4982ece724f310f04f900004dec9cab146ab3b3a3b
+SHA512 (PPI-1.266.tar.gz) = 0bd2810a993de79a437512a5f05aee71240aa77cc2f6f4fc152b2ff0d7d27e23f4d6fd4da47db93a9386d5565414815fa84bc15a82255e87ba57dad384eb6402