diff --git a/NEWS.md b/NEWS.md
index c84aa43..f94e988 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,12 @@
 # Harminv Release Notes
 
+## Harminv 1.4.2
+
+5 February 2023
+
+* Fix comparison to infinite threshold ([#12](https://github.com/NanoComp/harminv/pull/12))
+* Minor documentation updates.
+
 ## Harminv 1.4.1
 
 20 July 2017
diff --git a/configure.ac b/configure.ac
index 0160d90..3de5c4a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 # Process this file with autoconf to produce a configure script.
 
 # note: keep version number in sync with harminv.h
-AC_INIT([harminv],[1.4.1],[stevenj@alum.mit.edu])
+AC_INIT([harminv],[1.4.2],[stevenj@alum.mit.edu])
 
 AM_INIT_AUTOMAKE([foreign silent-rules 1.11])
 AM_SILENT_RULES(yes)
@@ -12,7 +12,7 @@ AM_MAINTAINER_MODE
 
 # Shared-library version number; indicates api compatibility, and is
 # *not* the same as the "human" version number.  CURRENT:REVISION:AGE
-SHARED_VERSION_INFO="3:0:0"
+SHARED_VERSION_INFO="3:1:0"
 AC_SUBST(SHARED_VERSION_INFO)
 AC_ENABLE_SHARED([no]) dnl shared libs cause too many headaches to be default