diff --git a/NEWS.md b/NEWS.md
index de8a722..fffbce5 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,12 @@
 # Libctl Release Notes
 
+## libctl 4.1.2
+
+7/27/2018
+
+* Bug fix in prism subpixel averaging (#19 and #20), thanks to
+  @DerekK88 for the bug report.
+
 ## libctl 4.1.1
 
 6/29/2018
diff --git a/configure.ac b/configure.ac
index 7102da1..cda0bb3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 # Process this file with autoconf to produce a configure script.
-AC_INIT(libctl, 4.1.1, stevenj@alum.mit.edu)
+AC_INIT(libctl, 4.1.2, stevenj@alum.mit.edu)
 AC_CONFIG_SRCDIR([src/ctl.c])
 AC_CONFIG_HEADERS([config.h src/ctl.h])
 AC_CONFIG_MACRO_DIR([m4])
@@ -8,7 +8,7 @@ AM_MAINTAINER_MODE
 # Shared-library version number; indicates api compatibility, and is
 # not the same as the "public" version number.  (Don't worry about this
 # except for public releases.)
-SHARED_VERSION_INFO="7:0:0" # CURRENT:REVISION:AGE
+SHARED_VERSION_INFO="7:1:0" # CURRENT:REVISION:AGE
 
 AM_INIT_AUTOMAKE([foreign])
 AC_SUBST(SHARED_VERSION_INFO)