diff --git a/src/uvw/util.cpp b/src/uvw/util.cpp
index 5dd5b186..1e5a6969 100644
--- a/src/uvw/util.cpp
+++ b/src/uvw/util.cpp
@@ -306,6 +306,10 @@ UVW_INLINE uint64_t utilities::constrained_memory() noexcept {
     return uv_get_constrained_memory();
 }
 
+UVW_INLINE uint64_t utilities::available_memory() noexcept {
+    return uv_get_available_memory();
+}
+
 UVW_INLINE double utilities::uptime() noexcept {
     double ret;
 
diff --git a/src/uvw/util.h b/src/uvw/util.h
index 288e6334..6c955d96 100644
--- a/src/uvw/util.h
+++ b/src/uvw/util.h
@@ -86,6 +86,7 @@ using file_handle = details::uv_type_wrapper<uv_file>;            /*!< Utility c
 using os_socket_handle = details::uv_type_wrapper<uv_os_sock_t>;  /*!< Utility class that wraps an os socket handle. */
 using os_file_descriptor = details::uv_type_wrapper<uv_os_fd_t>;  /*!< Utility class that wraps an os file descriptor. */
 using pid_type = details::uv_type_wrapper<uv_pid_t>;              /*!< Utility class that wraps a cross platform representation of a pid. */
+using clock_id = details::uvw_clock_id;                           /*!< Utility class that wraps a clock source. */
 
 constexpr file_handle std_in{0};  /*!< Placeholder for stdin descriptor. */
 constexpr file_handle std_out{1}; /*!< Placeholder for stdout descriptor. */
@@ -99,6 +100,7 @@ using gid_type = uv_gid_t;       /*!< Library equivalent for uv_gid_t. */
 
 using timeval = uv_timeval_t;       /*!< Library equivalent for uv_timeval_t. */
 using timeval64 = uv_timeval64_t;   /*!< Library equivalent for uv_timeval64_t. */
+using timespec64 = uv_timespec64_t; /*!< Library equivalent for uv_timespec64_t. */
 using resource_usage = uv_rusage_t; /*!< Library equivalent for uv_rusage_t. */
 
 /**
@@ -596,6 +598,12 @@ struct utilities {
      */
     static uint64_t constrained_memory() noexcept;
 
+    /**
+     * @brief Gets the amount of free memory still available to the process.
+     * @return Amount of free memory still available to the process (in bytes).
+     */
+    static uint64_t available_memory() noexcept;
+
     /**
      * @brief Gets the current system uptime.
      * @return The current system uptime or 0 in case of errors.
diff --git a/test/uvw/util.cpp b/test/uvw/util.cpp
index de4d2a9c..7b705712 100644
--- a/test/uvw/util.cpp
+++ b/test/uvw/util.cpp
@@ -4,7 +4,9 @@
 #include <uvw.hpp>
 
 template<typename T>
-struct tag { using type = T; };
+struct tag {
+    using type = T;
+};
 
 TEST(Util, Utilities) {
     ASSERT_EQ(uvw::pid_type{}, uvw::pid_type{});
@@ -81,6 +83,8 @@ TEST(Util, Utilities) {
 
     ASSERT_NO_THROW(uvw::utilities::load_average());
     ASSERT_NE(uvw::utilities::total_memory(), decltype(uvw::utilities::total_memory()){0});
+    ASSERT_NE(uvw::utilities::constrained_memory(), decltype(uvw::utilities::constrained_memory()){0});
+    ASSERT_NE(uvw::utilities::available_memory(), decltype(uvw::utilities::available_memory()){0});
     ASSERT_NE(uvw::utilities::uptime(), decltype(uvw::utilities::uptime()){0});
     ASSERT_NO_THROW(uvw::utilities::rusage());
     ASSERT_NO_THROW(uvw::utilities::gettime(uvw::clock_id::MONOTONIC));