diff --git a/DESCRIPTION b/DESCRIPTION
index 05feb49..5f02231 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: structToolbox
 Type: Package
 Title: Data processing & analysis tools for Metabolomics and other omics
-Version: 1.13.2
+Version: 1.13.3
 Authors@R: c(
     person(
         c("Gavin","Rhys"),
diff --git a/NEWS b/NEWS
index 1ffaa04..3e20df3 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+Changes 1.13.3
++ d-ratio equations changed to match Broadhurst et al (2018)
++ add tests for d-ratio
++ fix PCA eigenvalues calculation
+
 Changes 1.13.2
 + d-ratio filter now correctly removes features
 + update descriptions/documentation for missing value filters