diff --git a/ImageMagick.spec b/ImageMagick.spec
index 0ae26a7..c9be13d 100644
--- a/ImageMagick.spec
+++ b/ImageMagick.spec
@@ -67,7 +67,7 @@ BuildRequires:  zip
 %define quantum_depth 16
 %define source_version %{mfr_version}-%{mfr_revision}
 %define clibver   2
-%define cxxlibver 4
+%define cxxlibver 5
 %define libspec -%{maj}_Q%{quantum_depth}
 Version:        %{mfr_version}.%{mfr_revision}
 Release:        0