diff --git a/Makefile b/Makefile
index 78f2dc5..782961c 100644
--- a/Makefile
+++ b/Makefile
@@ -218,6 +218,9 @@ pg_sphere--1.4.2--1.5.0.sql:
 pg_sphere--1.5.0--1.5.1.sql:
 	cat upgrade_scripts/$@.in $^ > $@
 
+pg_sphere--1.5.1--1.5.2.sql:
+	cat upgrade_scripts/$@.in $^ > $@
+
 # end of local stuff
 
 src/sscan.o : src/sparse.c
diff --git a/Makefile.common.mk b/Makefile.common.mk
index be82047..8963227 100644
--- a/Makefile.common.mk
+++ b/Makefile.common.mk
@@ -5,4 +5,4 @@
 #----------------------------------------------------------------------------
 
 EXTENSION        	:= pg_sphere
-PGSPHERE_VERSION 	:= 1.5.1
+PGSPHERE_VERSION 	:= 1.5.2
diff --git a/expected/version.out b/expected/version.out
index ffad8f5..c1f0efe 100644
--- a/expected/version.out
+++ b/expected/version.out
@@ -2,6 +2,6 @@
 SELECT pg_sphere_version();
  pg_sphere_version 
 -------------------
- 1.5.1
+ 1.5.2
 (1 row)
 
diff --git a/pg_sphere.control b/pg_sphere.control
index 1e73251..85f7589 100644
--- a/pg_sphere.control
+++ b/pg_sphere.control
@@ -1,5 +1,5 @@
 # pg_sphere extension
 comment = 'spherical objects with useful functions, operators and index support'
-default_version = '1.5.1'
+default_version = '1.5.2'
 module_pathname = '$libdir/pg_sphere'
 relocatable = true
diff --git a/upgrade_scripts/pg_sphere--1.5.1--1.5.2.sql.in b/upgrade_scripts/pg_sphere--1.5.1--1.5.2.sql.in
new file mode 100644
index 0000000..3ff6a66
--- /dev/null
+++ b/upgrade_scripts/pg_sphere--1.5.1--1.5.2.sql.in
@@ -0,0 +1,2 @@
+-- Upgrade: 1.5.1 -> 1.5.2
+-- Nothing to do yet