diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2181409b8..374d96ae0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,7 +43,7 @@ set(OPENEXR_VERSION_API "${OpenEXR_VERSION_MAJOR}_${OpenEXR_VERSION_MINOR}")
 # For example, in "libOpenEXR.so.31.3.2.0", "libOpenEXR.so.31" is the SONAME
 # and ".3.2.0" identifies the corresponding library release.
 
-set(OPENEXR_LIB_SOVERSION 31)
+set(OPENEXR_LIB_SOVERSION 99)
 set(OPENEXR_LIB_VERSION "${OPENEXR_LIB_SOVERSION}.${OPENEXR_VERSION}") # e.g. "31.3.2.0"
 
 option(OPENEXR_INSTALL "Install OpenEXR libraries" ON)
diff --git a/src/lib/OpenEXRCore/openexr_version.h b/src/lib/OpenEXRCore/openexr_version.h
index ee9330635..139deb87e 100644
--- a/src/lib/OpenEXRCore/openexr_version.h
+++ b/src/lib/OpenEXRCore/openexr_version.h
@@ -8,8 +8,8 @@
 #ifndef INCLUDED_OPENEXR_VERSION_H
 #    define INCLUDED_OPENEXR_VERSION_H
 
-#    define OPENEXR_VERSION_MAJOR 3
-#    define OPENEXR_VERSION_MINOR 3
+#    define OPENEXR_VERSION_MAJOR 4
+#    define OPENEXR_VERSION_MINOR 0
 #    define OPENEXR_VERSION_PATCH 0
 
 #endif