diff --git a/Make.inc b/Make.inc
index a32cd32eda5f7..81ff923156ed8 100644
--- a/Make.inc
+++ b/Make.inc
@@ -1042,13 +1042,13 @@ ifeq ($(OS), WINNT)
 ifneq ($(USEMSVC), 1)
 HAVE_SSP := 1
 OSLIBS += -Wl,--export-all-symbols -Wl,--version-script=$(JULIAHOME)/src/julia.expmap \
-	$(NO_WHOLE_ARCHIVE) -lpsapi -lkernel32 -lws2_32 -liphlpapi -lwinmm -ldbghelp -luserenv
+	$(NO_WHOLE_ARCHIVE) -lpsapi -lkernel32 -lws2_32 -liphlpapi -lwinmm -ldbghelp -luserenv -lsecur32
 JLDFLAGS := -Wl,--stack,8388608
 ifeq ($(ARCH),i686)
 JLDFLAGS += -Wl,--large-address-aware
 endif
 else #USEMSVC
-OSLIBS += kernel32.lib ws2_32.lib psapi.lib advapi32.lib iphlpapi.lib shell32.lib winmm.lib userenv.lib
+OSLIBS += kernel32.lib ws2_32.lib psapi.lib advapi32.lib iphlpapi.lib shell32.lib winmm.lib userenv.lib secur32.lib
 JLDFLAGS := -stack:8388608
 endif
 JCPPFLAGS += -D_WIN32_WINNT=0x0502
diff --git a/deps/checksums/libuv-2348256acf5759a544e5ca7935f638d2bc091d60.tar.gz/md5 b/deps/checksums/libuv-2348256acf5759a544e5ca7935f638d2bc091d60.tar.gz/md5
new file mode 100644
index 0000000000000..5ab28fd10c4ad
--- /dev/null
+++ b/deps/checksums/libuv-2348256acf5759a544e5ca7935f638d2bc091d60.tar.gz/md5
@@ -0,0 +1 @@
+f70104dab096fbb2f029fb57ce83f321
diff --git a/deps/checksums/libuv-2348256acf5759a544e5ca7935f638d2bc091d60.tar.gz/sha512 b/deps/checksums/libuv-2348256acf5759a544e5ca7935f638d2bc091d60.tar.gz/sha512
new file mode 100644
index 0000000000000..317972b4a4c6e
--- /dev/null
+++ b/deps/checksums/libuv-2348256acf5759a544e5ca7935f638d2bc091d60.tar.gz/sha512
@@ -0,0 +1 @@
+c8bf3c736a60feb0c6994aa7cd1b80e1a45bd6096aa66db320ddfc27b59a0797d303338ea75978619173e4f0a680254f3db29c9f6d1b84361030cc11c7729c98
diff --git a/deps/checksums/libuv-ed3700c849289ed01fe04273a7bf865340b2bd7e.tar.gz/md5 b/deps/checksums/libuv-ed3700c849289ed01fe04273a7bf865340b2bd7e.tar.gz/md5
deleted file mode 100644
index f2728429466bb..0000000000000
--- a/deps/checksums/libuv-ed3700c849289ed01fe04273a7bf865340b2bd7e.tar.gz/md5
+++ /dev/null
@@ -1 +0,0 @@
-4b25bc8933574c8ced7b0005883338ee
diff --git a/deps/checksums/libuv-ed3700c849289ed01fe04273a7bf865340b2bd7e.tar.gz/sha512 b/deps/checksums/libuv-ed3700c849289ed01fe04273a7bf865340b2bd7e.tar.gz/sha512
deleted file mode 100644
index 7860ef8c5f2b5..0000000000000
--- a/deps/checksums/libuv-ed3700c849289ed01fe04273a7bf865340b2bd7e.tar.gz/sha512
+++ /dev/null
@@ -1 +0,0 @@
-1305035b1372bdf234e3c5e673ee4c8ab5bda83ff06bc27704786def52667c3143fe587fca8f6e0855ba0c8b6d4dd90b2faefd33736224173f459d751885683e
diff --git a/deps/libuv.mk b/deps/libuv.mk
index d8c189fb33f03..5f9062ea8f910 100644
--- a/deps/libuv.mk
+++ b/deps/libuv.mk
@@ -3,7 +3,7 @@ LIBUV_GIT_URL:=git://github.com/JuliaLang/libuv.git
 LIBUV_TAR_URL=https://api.github.com/repos/JuliaLang/libuv/tarball/$1
 $(eval $(call git-external,libuv,LIBUV,configure,,$(SRCCACHE)))
 
-UV_CFLAGS := -D_GNU_SOURCE
+UV_CFLAGS := -O2
 ifeq ($(USEMSVC), 1)
 UV_CFLAGS += -DBUILDING_UV_SHARED
 endif
@@ -11,18 +11,18 @@ ifeq ($(USEICC), 1)
 UV_CFLAGS += -static-intel
 endif
 
-UV_MFLAGS += LDFLAGS="$(LDFLAGS) $(CLDFLAGS) -v"
+UV_FLAGS := LDFLAGS="$(LDFLAGS) $(CLDFLAGS) -v"
 ifneq ($(UV_CFLAGS),)
-UV_MFLAGS += CFLAGS="$(CFLAGS) $(UV_CFLAGS)"
+UV_FLAGS += CFLAGS="$(CFLAGS) $(UV_CFLAGS)"
 endif
+ifeq ($(USEMSVC), 1)
+UV_FLAGS += --disable-shared
+endif
+
 ifneq ($(VERBOSE), 0)
 UV_MFLAGS += V=1
 endif
-ifneq ($(USEMSVC), 1)
-UV_FLAGS := $(UV_MFLAGS)
-else
-UV_FLAGS := --disable-shared $(UV_MFLAGS)
-endif
+
 
 $(BUILDDIR)/$(LIBUV_SRC_DIR)/build-configured: $(SRCCACHE)/$(LIBUV_SRC_DIR)/source-extracted
 	touch -c $(SRCCACHE)/$(LIBUV_SRC_DIR)/aclocal.m4 # touch a few files to prevent autogen from getting called
diff --git a/deps/libuv.version b/deps/libuv.version
index 17a47f3323e49..ca06025c4bfd6 100644
--- a/deps/libuv.version
+++ b/deps/libuv.version
@@ -1,2 +1,2 @@
-LIBUV_BRANCH=julia-uv2
-LIBUV_SHA1=ed3700c849289ed01fe04273a7bf865340b2bd7e
+LIBUV_BRANCH=julia-uv2-1.24.0
+LIBUV_SHA1=2348256acf5759a544e5ca7935f638d2bc091d60
diff --git a/src/jl_uv.c b/src/jl_uv.c
index b2081a7f2eac8..a98108e0953ce 100644
--- a/src/jl_uv.c
+++ b/src/jl_uv.c
@@ -293,11 +293,16 @@ JL_DLLEXPORT int jl_spawn(char *name, char **argv,
                           uv_stdio_container_t *stdio, int nstdio,
                           uint32_t flags, char **env, char *cwd, uv_exit_cb cb)
 {
-    uv_process_options_t opts;
+    uv_process_options_t opts = {0};
     opts.stdio = stdio;
     opts.file = name;
     opts.env = env;
     opts.flags = flags;
+    // unused fields:
+    //opts.uid = 0;
+    //opts.gid = 0;
+    //opts.cpumask = NULL;
+    //opts.cpumask_size = 0;
     opts.cwd = cwd;
     opts.args = argv;
     opts.stdio_count = nstdio;
diff --git a/src/uv_constants.h b/src/uv_constants.h
index 32882133c64b4..c403bd7374413 100644
--- a/src/uv_constants.h
+++ b/src/uv_constants.h
@@ -1,8 +1,14 @@
 // This file is a part of Julia. License is MIT: https://julialang.org/license
 
 #include "uv.h"
+#if EDOM > 0
+# define UV__ERR(x) (-(x))
+#else
+# define UV__ERR(x) (x)
+#endif
 #define XX(uc,lc) :UV_##uc,
-#define YY(uc,lc) (:UV_##uc,UV__##uc),
+#define YY(uc,mc) (:UV_##uc,UV__##uc),
+
 const uv_handle_types = [UV_HANDLE_TYPE_MAP(XX) :UV_FILE]
 const uv_req_types = [UV_REQ_TYPE_MAP(XX)]
 const uv_err_vals = [UV_ERRNO_MAP(YY)]
diff --git a/stdlib/Sockets/src/addrinfo.jl b/stdlib/Sockets/src/addrinfo.jl
index d9c765f199d9b..59e4f2dae1088 100644
--- a/stdlib/Sockets/src/addrinfo.jl
+++ b/stdlib/Sockets/src/addrinfo.jl
@@ -57,7 +57,6 @@ julia> getalladdrinfo("google.com")
 ```
 """
 function getalladdrinfo(host::String)
-    isascii(host) || error("non-ASCII hostname: $host")
     req = Libc.malloc(Base._sizeof_uv_getaddrinfo)
     uv_req_set_data(req, C_NULL) # in case we get interrupted before arriving at the wait call
     status = ccall(:jl_getaddrinfo, Int32, (Ptr{Cvoid}, Ptr{Cvoid}, Cstring, Ptr{Cvoid}, Ptr{Cvoid}),
diff --git a/test/runtests.jl b/test/runtests.jl
index be99b7084d8e1..e6f00c61aa955 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -112,9 +112,10 @@ cd(@__DIR__) do
     local stdin_monitor
     all_tasks = Task[]
     try
-        if isa(stdin, Base.TTY)
+        # Monitor stdin and kill this task on ^C
+        # but don't do this on Windows, because it may deadlock in the kernel
+        if !Sys.iswindows() && isa(stdin, Base.TTY)
             t = current_task()
-            # Monitor stdin and kill this task on ^C
             stdin_monitor = @async begin
                 term = REPL.Terminals.TTYTerminal("xterm", stdin, stdout, stderr)
                 try
@@ -197,7 +198,7 @@ cd(@__DIR__) do
         foreach(task->try; schedule(task, InterruptException(); error=true); catch; end, all_tasks)
         foreach(wait, all_tasks)
     finally
-        if isa(stdin, Base.TTY)
+        if @isdefined stdin_monitor
             schedule(stdin_monitor, InterruptException(); error=true)
         end
     end