diff --git a/Doxyfile b/Doxyfile
index d6a4050..960a4d0 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = pvAccessCPP
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 7.1.4
+PROJECT_NUMBER         = 7.1.5-dev
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/configure/CONFIG_PVACCESS_VERSION b/configure/CONFIG_PVACCESS_VERSION
index ef09f32..79bfe6b 100644
--- a/configure/CONFIG_PVACCESS_VERSION
+++ b/configure/CONFIG_PVACCESS_VERSION
@@ -2,11 +2,11 @@
 
 EPICS_PVA_MAJOR_VERSION = 7
 EPICS_PVA_MINOR_VERSION = 1
-EPICS_PVA_MAINTENANCE_VERSION = 4
+EPICS_PVA_MAINTENANCE_VERSION = 5
 
 # Development flag, set to zero for release versions
 
-EPICS_PVA_DEVELOPMENT_FLAG = 0
+EPICS_PVA_DEVELOPMENT_FLAG = 1
 
 # Immediately after a release the MAINTENANCE_VERSION
 # will be incremented and the DEVELOPMENT_FLAG set to 1
diff --git a/documentation/release_notes.dox b/documentation/release_notes.dox
index d921c5b..1466ae0 100644
--- a/documentation/release_notes.dox
+++ b/documentation/release_notes.dox
@@ -1,5 +1,8 @@
 /** @page pvarelease_notes Release Notes
 
+Release 7.1.5 (UNRELEASED)
+==========================
+
 Release 7.1.4 (June 2021)
 =========================