diff --git a/IlmBase/configure.ac b/IlmBase/configure.ac
index 3fa5192c7..a697810a6 100644
--- a/IlmBase/configure.ac
+++ b/IlmBase/configure.ac
@@ -21,7 +21,7 @@ AM_INIT_AUTOMAKE(1.6.3)  dnl Require automake 1.6.3 or better
 AM_MAINTAINER_MODE
 
 
-LIBTOOL_CURRENT=24
+LIBTOOL_CURRENT=25
 LIBTOOL_REVISION=0
 LIBTOOL_AGE=0
 LIBTOOL_VERSION=$LIBTOOL_CURRENT:$LIBTOOL_REVISION:$LIBTOOL_AGE
diff --git a/OpenEXR/configure.ac b/OpenEXR/configure.ac
index 2806945fc..d98f15cdd 100644
--- a/OpenEXR/configure.ac
+++ b/OpenEXR/configure.ac
@@ -23,7 +23,7 @@ AM_INIT_AUTOMAKE(1.6.3)  dnl Require automake 1.6.3 or better
 AM_MAINTAINER_MODE
 
 
-LIBTOOL_CURRENT=24
+LIBTOOL_CURRENT=25
 LIBTOOL_REVISION=0
 LIBTOOL_AGE=0
 LIBTOOL_VERSION=$LIBTOOL_CURRENT:$LIBTOOL_REVISION:$LIBTOOL_AGE
diff --git a/OpenEXR_Viewers/configure.ac b/OpenEXR_Viewers/configure.ac
index fdbb32a79..fe1304684 100644
--- a/OpenEXR_Viewers/configure.ac
+++ b/OpenEXR_Viewers/configure.ac
@@ -13,7 +13,7 @@ AM_INIT_AUTOMAKE(1.6.3)  dnl Require automake 1.6.3 or better
 AM_MAINTAINER_MODE
 
 
-LIBTOOL_CURRENT=24
+LIBTOOL_CURRENT=25
 LIBTOOL_REVISION=1
 LIBTOOL_AGE=0
 LIBTOOL_VERSION=$LIBTOOL_CURRENT:$LIBTOOL_REVISION:$LIBTOOL_AGE
diff --git a/PyIlmBase/configure.ac b/PyIlmBase/configure.ac
index 5c1556f6e..7ac020829 100644
--- a/PyIlmBase/configure.ac
+++ b/PyIlmBase/configure.ac
@@ -16,7 +16,7 @@ dnl static python modules make no sense - disable static
 AC_DISABLE_STATIC
 
 
-LIBTOOL_CURRENT=24
+LIBTOOL_CURRENT=25
 LIBTOOL_REVISION=2
 LIBTOOL_AGE=0
 LIBTOOL_VERSION=$LIBTOOL_CURRENT:$LIBTOOL_REVISION:$LIBTOOL_AGE