diff --git a/absl/base/config.h b/absl/base/config.h
index 1de79930073..ff0c2978c24 100644
--- a/absl/base/config.h
+++ b/absl/base/config.h
@@ -112,7 +112,7 @@
 // LTS releases can be obtained from
 // https://github.com/abseil/abseil-cpp/releases.
 #define ABSL_LTS_RELEASE_VERSION 20230802
-#define ABSL_LTS_RELEASE_PATCH_LEVEL 0
+#define ABSL_LTS_RELEASE_PATCH_LEVEL 1
 
 // Helper macro to convert a CPP variable to a string literal.
 #define ABSL_INTERNAL_DO_TOKEN_STR(x) #x
diff --git a/absl/base/internal/sysinfo.cc b/absl/base/internal/sysinfo.cc
index 8bcc4fafaf9..79eaba3e51c 100644
--- a/absl/base/internal/sysinfo.cc
+++ b/absl/base/internal/sysinfo.cc
@@ -34,6 +34,14 @@
 #include <sys/sysctl.h>
 #endif
 
+#ifdef __FreeBSD__
+#include <pthread_np.h>
+#endif
+
+#ifdef __NetBSD__
+#include <lwp.h>
+#endif
+
 #if defined(__myriad2__)
 #include <rtems.h>
 #endif
@@ -432,6 +440,18 @@ pid_t GetTID() {
   return static_cast<pid_t>(tid);
 }
 
+#elif defined(__FreeBSD__)
+
+pid_t GetTID() { return static_cast<pid_t>(pthread_getthreadid_np()); }
+
+#elif defined(__OpenBSD__)
+
+pid_t GetTID() { return getthrid(); }
+
+#elif defined(__NetBSD__)
+
+pid_t GetTID() { return static_cast<pid_t>(_lwp_self()); }
+
 #elif defined(__native_client__)
 
 pid_t GetTID() {
diff --git a/absl/synchronization/internal/waiter.h b/absl/synchronization/internal/waiter.h
index 1a8b0b83f62..6ba204bea0a 100644
--- a/absl/synchronization/internal/waiter.h
+++ b/absl/synchronization/internal/waiter.h
@@ -40,6 +40,8 @@
 #define ABSL_WAITER_MODE ABSL_WAITER_MODE_SEM
 #elif defined(ABSL_INTERNAL_HAVE_PTHREAD_WAITER)
 #define ABSL_WAITER_MODE ABSL_WAITER_MODE_CONDVAR
+#elif defined(ABSL_INTERNAL_HAVE_STDCPP_WAITER)
+#define ABSL_WAITER_MODE ABSL_WAITER_MODE_STDCPP
 #else
 #error ABSL_WAITER_MODE is undefined
 #endif