diff --git a/CMakeLists.txt b/CMakeLists.txt
index f80f9cc..2e81b77 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -827,6 +827,7 @@
 
 set_package_properties(absl PROPERTIES
   DESCRIPTION "${CERES_ABSL_DESCRIPTION}"
+  TYPE REQUIRED
   URL "https://abseil.io")
 set_package_properties(AccelerateSparse PROPERTIES
   DESCRIPTION "Apple's Accelerate framework with sparse linear solvers")