diff --git a/science/misc/cfitsio/pspec.xml b/science/misc/cfitsio/pspec.xml
index 78612d2db1..2267f6a943 100644
--- a/science/misc/cfitsio/pspec.xml
+++ b/science/misc/cfitsio/pspec.xml
@@ -13,7 +13,7 @@
         <IsA>app:console</IsA>
         <Summary>C and Fortran library for manipulating FITS files</Summary>
         <Description>CFITSIO provides simple high-level routines for reading and writing FITS files that insulate the programmer from the internal complexities of the FITS format.</Description>
-        <Archive sha1sum="48bd6389dcff3228508eec70384f2cae3a88ff32" type="targz">http://heasarc.gsfc.nasa.gov/FTP/software/fitsio/c/cfitsio3370.tar.gz</Archive>
+        <Archive sha1sum="68a85356f19b9e4e2478d0091e0b1dcf14731073" type="targz">http://heasarc.gsfc.nasa.gov/FTP/software/fitsio/c/cfitsio3420.tar.gz</Archive>
     </Source>
 
     <Package>
@@ -38,6 +38,13 @@
     </Package>
 
     <History>
+        <Update release="4">
+            <Date>2018-02-13</Date>
+            <Version>3.420</Version>
+            <Comment>Version bump.</Comment>
+            <Name>Mustafa Cinasal</Name>
+            <Email>muscnsl@gmail.com</Email>
+        </Update>
         <Update release="3">
             <Date>2017-04-15</Date>
             <Version>3.370</Version>