diff --git a/unittest/c-library/test_library_properties.cpp b/unittest/c-library/test_library_properties.cpp
index 11bdc28552..2f8724e325 100644
--- a/unittest/c-library/test_library_properties.cpp
+++ b/unittest/c-library/test_library_properties.cpp
@@ -53,7 +53,7 @@ protected:
 
 TEST_F(LibraryProperties, version)
 {
-    EXPECT_GE(20200824, lammps_version(lmp));
+    EXPECT_LT(20200917, lammps_version(lmp));
 };
 
 TEST_F(LibraryProperties, memory_usage)