diff --git a/winloop/vendor/include/uv.h b/winloop/vendor/include/uv.h
index 02397dd..a62b3fa 100644
--- a/winloop/vendor/include/uv.h
+++ b/winloop/vendor/include/uv.h
@@ -1106,7 +1106,14 @@ enum uv_process_flags {
    * option is only meaningful on Windows systems. On Unix it is silently
    * ignored.
    */
-  UV_PROCESS_WINDOWS_HIDE_GUI = (1 << 6)
+  UV_PROCESS_WINDOWS_HIDE_GUI = (1 << 6),
+  /*
+   * On Windows, if the path to the program to execute, specified in
+   * uv_process_options_t's file field, has a directory component,
+   * search for the exact file name before trying variants with
+   * extensions like '.exe' or '.cmd'.
+   */
+  UV_PROCESS_WINDOWS_FILE_PATH_EXACT_NAME = (1 << 7)
 };
 
 /*
@@ -1284,6 +1291,17 @@ UV_EXTERN uv_pid_t uv_os_getppid(void);
 UV_EXTERN int uv_os_getpriority(uv_pid_t pid, int* priority);
 UV_EXTERN int uv_os_setpriority(uv_pid_t pid, int priority);
 
+enum {
+  UV_THREAD_PRIORITY_HIGHEST = 2,
+  UV_THREAD_PRIORITY_ABOVE_NORMAL = 1,
+  UV_THREAD_PRIORITY_NORMAL = 0,
+  UV_THREAD_PRIORITY_BELOW_NORMAL = -1,
+  UV_THREAD_PRIORITY_LOWEST = -2,
+};
+
+UV_EXTERN int uv_thread_getpriority(uv_thread_t tid, int* priority);
+UV_EXTERN int uv_thread_setpriority(uv_thread_t tid, int priority);
+
 UV_EXTERN unsigned int uv_available_parallelism(void);
 UV_EXTERN int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count);
 UV_EXTERN void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count);
@@ -1885,6 +1903,18 @@ struct uv_loop_s {
 UV_EXTERN void* uv_loop_get_data(const uv_loop_t*);
 UV_EXTERN void uv_loop_set_data(uv_loop_t*, void* data);
 
+/* String utilities needed internally for dealing with Windows. */
+size_t uv_utf16_length_as_wtf8(const uint16_t* utf16,
+                               ssize_t utf16_len);
+int uv_utf16_to_wtf8(const uint16_t* utf16,
+                     ssize_t utf16_len,
+                     char** wtf8_ptr,
+                     size_t* wtf8_len_ptr);
+ssize_t uv_wtf8_length_as_utf16(const char* wtf8);
+void uv_wtf8_to_utf16(const char* wtf8,
+                      uint16_t* utf16,
+                      size_t utf16_len);
+
 /* Don't export the private CPP symbols. */
 #undef UV_HANDLE_TYPE_PRIVATE
 #undef UV_REQ_TYPE_PRIVATE
diff --git a/winloop/vendor/include/uv/unix.h b/winloop/vendor/include/uv/unix.h
index 09f88a5..538f98b 100644
--- a/winloop/vendor/include/uv/unix.h
+++ b/winloop/vendor/include/uv/unix.h
@@ -328,7 +328,10 @@ typedef struct {
 
 #define UV_TIMER_PRIVATE_FIELDS                                               \
   uv_timer_cb timer_cb;                                                       \
-  void* heap_node[3];                                                         \
+  union {                                                                     \
+    void* heap[3];                                                            \
+    struct uv__queue queue;                                                   \
+  } node;                                                                     \
   uint64_t timeout;                                                           \
   uint64_t repeat;                                                            \
   uint64_t start_id;
diff --git a/winloop/vendor/include/uv/version.h b/winloop/vendor/include/uv/version.h
index 24fac8d..d6a61a1 100644
--- a/winloop/vendor/include/uv/version.h
+++ b/winloop/vendor/include/uv/version.h
@@ -31,7 +31,7 @@
  */
 
 #define UV_VERSION_MAJOR 1
-#define UV_VERSION_MINOR 46
+#define UV_VERSION_MINOR 48
 #define UV_VERSION_PATCH 0
 #define UV_VERSION_IS_RELEASE 1
 #define UV_VERSION_SUFFIX ""
diff --git a/winloop/vendor/include/uv/win.h b/winloop/vendor/include/uv/win.h
index 6f8c472..f4adaa2 100644
--- a/winloop/vendor/include/uv/win.h
+++ b/winloop/vendor/include/uv/win.h
@@ -45,7 +45,7 @@ typedef struct pollfd {
 #endif
 
 #include <mswsock.h>
-// Disable the typedef in mstcpip.h of MinGW.
+/* Disable the typedef in mstcpip.h of MinGW. */
 #define _TCP_INITIAL_RTO_PARAMETERS _TCP_INITIAL_RTO_PARAMETERS__AVOID
 #define TCP_INITIAL_RTO_PARAMETERS TCP_INITIAL_RTO_PARAMETERS__AVOID
 #define PTCP_INITIAL_RTO_PARAMETERS PTCP_INITIAL_RTO_PARAMETERS__AVOID
@@ -70,7 +70,7 @@ typedef struct pollfd {
 # define S_IFLNK 0xA000
 #endif
 
-// Define missing in Windows Kit Include\{VERSION}\ucrt\sys\stat.h
+/* Define missing in Windows Kit Include\{VERSION}\ucrt\sys\stat.h */
 #if defined(_CRT_INTERNAL_NONSTDC_NAMES) && _CRT_INTERNAL_NONSTDC_NAMES && !defined(S_IFIFO)
 # define S_IFIFO _S_IFIFO
 #endif
@@ -550,7 +550,10 @@ typedef struct {
   unsigned char events;
 
 #define UV_TIMER_PRIVATE_FIELDS                                               \
-  void* heap_node[3];                                                         \
+  union {                                                                     \
+    void* heap[3];                                                            \
+    struct uv__queue queue;                                                   \
+  } node;                                                                     \
   int unused;                                                                 \
   uint64_t timeout;                                                           \
   uint64_t repeat;                                                            \
diff --git a/winloop/vendor/libuv.lib b/winloop/vendor/libuv.lib
index ca19265..adffd71 100644
Binary files a/winloop/vendor/libuv.lib and b/winloop/vendor/libuv.lib differ