diff --git a/.gitignore b/.gitignore
index 95e194c..fa6017e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,4 +15,4 @@
 # ---------------------------------------------------------------------------
 #
 # Most recent upstrem source
-/CppAD-20240000.0.tar.gz
+/CppAD-20240000.1.tar.gz
diff --git a/cppad.spec b/cppad.spec
index 2a013c0..c36ec93 100644
--- a/cppad.spec
+++ b/cppad.spec
@@ -28,7 +28,7 @@
 # Fedora Release starts with 1; see
 # https://docs.fedoraproject.org/en-US/packaging-guidelines/Versioning/
 Name:    cppad
-Version: 20240000.0
+Version: 20240000.1
 Release: 1%{?dist}
 Summary: C++ Algorithmic Differentiation (AD), %{name}-devel and %{name}-doc
 #
@@ -260,6 +260,9 @@ make %{?_smp_mflags} check
 # This enables one to check that the necessary files are installed.
 # ----------------------------------------------------------------------------
 %changelog
+* Mon Jan 08 2024 Brad Bell <bradbell at seanet dot com> - 20240000.1-1
+- Upstream fix of bug found by build on buildvm-x86-16.iad2.fedoraproject.org
+
 * Sat Jan 06 2024 Brad Bell <bradbell at seanet dot com> - 20240000.0-1
 - New upstream source cppad-20240000.0.
 - require python-xrst >= 2024.0
diff --git a/sources b/sources
index f7996a5..fe882af 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (CppAD-20240000.0.tar.gz) = d437d8cae591da3e3b2b29d078a90e91aa005b93db8cd8794702c3cbb972bcd572160220b4793b8eada62665beac7a2cfdc32a2def40a1b9822144a7dde293ab
+SHA512 (CppAD-20240000.1.tar.gz) = 453f1975dc8cb65df9838e8fb1fa3c2ae302c52a2628e58112ca5aa272ea02b6597988f8f6424e505ed18a29656a38fa943ea2a1d0f3e3f2509ebdc2fe9d84d4