diff --git a/docs/CONTRIBUTORS b/docs/CONTRIBUTORS
index 2ca03eddd..a3fca586c 100644
--- a/docs/CONTRIBUTORS
+++ b/docs/CONTRIBUTORS
@@ -276,6 +276,7 @@ Zhen Yan
 Zhou Shen
 Zhouyi Shen
 Zixi Li
+apocelipes
 dependabot[bot]
 february cozzocrea
 sumpster
diff --git a/include/verilatedos_c.h b/include/verilatedos_c.h
index b8ef98b43..74112cb2f 100644
--- a/include/verilatedos_c.h
+++ b/include/verilatedos_c.h
@@ -41,6 +41,9 @@
 #if defined(__APPLE__) && !defined(__arm64__) && !defined(__POWERPC__)
 # include <cpuid.h>  // For __cpuid_count()
 #endif
+#if defined(__FreeBSD__)
+# include <pthread_np.h>  // For pthread_getaffinity_np()
+#endif
 
 #if defined(__APPLE__) && defined(__MACH__)
 # include <mach/mach.h>  // For task_info()