diff --git a/deps/uvwasi/include/fd_table.h b/deps/uvwasi/include/fd_table.h
index fa8a44e7468d41..f29b1adf88d6f0 100644
--- a/deps/uvwasi/include/fd_table.h
+++ b/deps/uvwasi/include/fd_table.h
@@ -6,6 +6,7 @@
 #include "wasi_types.h"
 
 struct uvwasi_s;
+struct uvwasi_options_s;
 
 struct uvwasi_fd_wrap_t {
   uvwasi_fd_t id;
@@ -27,8 +28,7 @@ struct uvwasi_fd_table_t {
 };
 
 uvwasi_errno_t uvwasi_fd_table_init(struct uvwasi_s* uvwasi,
-                                    struct uvwasi_fd_table_t* table,
-                                    uint32_t init_size);
+                                    struct uvwasi_options_s* options);
 void uvwasi_fd_table_free(struct uvwasi_s* uvwasi,
                           struct uvwasi_fd_table_t* table);
 uvwasi_errno_t uvwasi_fd_table_insert(struct uvwasi_s* uvwasi,
diff --git a/deps/uvwasi/include/uvwasi.h b/deps/uvwasi/include/uvwasi.h
index 9ca30459e23a73..39ee2f0ceb6609 100644
--- a/deps/uvwasi/include/uvwasi.h
+++ b/deps/uvwasi/include/uvwasi.h
@@ -11,7 +11,7 @@ extern "C" {
 
 #define UVWASI_VERSION_MAJOR 0
 #define UVWASI_VERSION_MINOR 0
-#define UVWASI_VERSION_PATCH 5
+#define UVWASI_VERSION_PATCH 6
 #define UVWASI_VERSION_HEX ((UVWASI_VERSION_MAJOR << 16) | \
                             (UVWASI_VERSION_MINOR <<  8) | \
                             (UVWASI_VERSION_PATCH))
@@ -60,6 +60,9 @@ typedef struct uvwasi_options_s {
   size_t argc;
   char** argv;
   char** envp;
+  uvwasi_fd_t in;
+  uvwasi_fd_t out;
+  uvwasi_fd_t err;
   const uvwasi_mem_t* allocator;
 } uvwasi_options_t;
 
diff --git a/deps/uvwasi/src/clocks.c b/deps/uvwasi/src/clocks.c
index e1fbc696b62f05..fd42b9e50e4d8e 100644
--- a/deps/uvwasi/src/clocks.c
+++ b/deps/uvwasi/src/clocks.c
@@ -6,6 +6,7 @@
 #endif /* _WIN32 */
 
 #include "uv.h"
+#include "clocks.h"
 #include "wasi_types.h"
 #include "uv_mapping.h"
 
diff --git a/deps/uvwasi/src/fd_table.c b/deps/uvwasi/src/fd_table.c
index bc32f4dd28bbce..f6e530d9591df2 100644
--- a/deps/uvwasi/src/fd_table.c
+++ b/deps/uvwasi/src/fd_table.c
@@ -14,6 +14,46 @@
 #include "uvwasi_alloc.h"
 
 
+static uvwasi_errno_t uvwasi__insert_stdio(uvwasi_t* uvwasi,
+                                           struct uvwasi_fd_table_t* table,
+                                           const uvwasi_fd_t fd,
+                                           const uvwasi_fd_t expected,
+                                           const char* name) {
+  struct uvwasi_fd_wrap_t* wrap;
+  uvwasi_filetype_t type;
+  uvwasi_rights_t base;
+  uvwasi_rights_t inheriting;
+  uvwasi_errno_t err;
+
+  err = uvwasi__get_filetype_by_fd(fd, &type);
+  if (err != UVWASI_ESUCCESS)
+    return err;
+
+  err = uvwasi__get_rights(fd, UV_FS_O_RDWR, type, &base, &inheriting);
+  if (err != UVWASI_ESUCCESS)
+    return err;
+
+  err = uvwasi_fd_table_insert(uvwasi,
+                               table,
+                               fd,
+                               name,
+                               name,
+                               type,
+                               base,
+                               inheriting,
+                               0,
+                               &wrap);
+  if (err != UVWASI_ESUCCESS)
+    return err;
+
+  if (wrap->id != expected)
+    err = UVWASI_EBADF;
+
+  uv_mutex_unlock(&wrap->mutex);
+  return err;
+}
+
+
 uvwasi_errno_t uvwasi_fd_table_insert(uvwasi_t* uvwasi,
                                       struct uvwasi_fd_table_t* table,
                                       uv_file fd,
@@ -28,7 +68,7 @@ uvwasi_errno_t uvwasi_fd_table_insert(uvwasi_t* uvwasi,
   struct uvwasi_fd_wrap_t** new_fds;
   uvwasi_errno_t err;
   uint32_t new_size;
-  int index;
+  uint32_t index;
   uint32_t i;
   int r;
   size_t mp_len;
@@ -69,16 +109,17 @@ uvwasi_errno_t uvwasi_fd_table_insert(uvwasi_t* uvwasi,
     table->size = new_size;
   } else {
     /* The table is big enough, so find an empty slot for the new data. */
-    index = -1;
+    int valid_slot = 0;
     for (i = 0; i < table->size; ++i) {
       if (table->fds[i] == NULL) {
+        valid_slot = 1;
         index = i;
         break;
       }
     }
 
-    /* index should never be -1. */
-    if (index == -1) {
+    /* This should never happen. */
+    if (valid_slot == 0) {
       uvwasi__free(uvwasi, entry);
       err = UVWASI_ENOSPC;
       goto exit;
@@ -116,25 +157,21 @@ uvwasi_errno_t uvwasi_fd_table_insert(uvwasi_t* uvwasi,
 
 
 uvwasi_errno_t uvwasi_fd_table_init(uvwasi_t* uvwasi,
-                                    struct uvwasi_fd_table_t* table,
-                                    uint32_t init_size) {
-  struct uvwasi_fd_wrap_t* wrap;
-  uvwasi_filetype_t type;
-  uvwasi_rights_t base;
-  uvwasi_rights_t inheriting;
+                                    uvwasi_options_t* options) {
+  struct uvwasi_fd_table_t* table;
   uvwasi_errno_t err;
-  uvwasi_fd_t i;
   int r;
 
   /* Require an initial size of at least three to store the stdio FDs. */
-  if (table == NULL || init_size < 3)
+  if (uvwasi == NULL || options == NULL || options->fd_table_size < 3)
     return UVWASI_EINVAL;
 
+  table = &uvwasi->fds;
   table->fds = NULL;
   table->used = 0;
-  table->size = init_size;
+  table->size = options->fd_table_size;
   table->fds = uvwasi__calloc(uvwasi,
-                              init_size,
+                              options->fd_table_size,
                               sizeof(struct uvwasi_fd_wrap_t*));
 
   if (table->fds == NULL)
@@ -153,35 +190,17 @@ uvwasi_errno_t uvwasi_fd_table_init(uvwasi_t* uvwasi,
   }
 
   /* Create the stdio FDs. */
-  for (i = 0; i < 3; ++i) {
-    err = uvwasi__get_filetype_by_fd(i, &type);
-    if (err != UVWASI_ESUCCESS)
-      goto error_exit;
-
-    err = uvwasi__get_rights(i, UV_FS_O_RDWR, type, &base, &inheriting);
-    if (err != UVWASI_ESUCCESS)
-      goto error_exit;
-
-    err = uvwasi_fd_table_insert(uvwasi,
-                                 table,
-                                 i,
-                                 "",
-                                 "",
-                                 type,
-                                 base,
-                                 inheriting,
-                                 0,
-                                 &wrap);
-    if (err != UVWASI_ESUCCESS)
-      goto error_exit;
-
-    r = wrap->id != i || wrap->id != (uvwasi_fd_t) wrap->fd;
-    uv_mutex_unlock(&wrap->mutex);
-    if (r) {
-      err = UVWASI_EBADF;
-      goto error_exit;
-    }
-  }
+  err = uvwasi__insert_stdio(uvwasi, table, options->in, 0, "<stdin>");
+  if (err != UVWASI_ESUCCESS)
+    goto error_exit;
+
+  err = uvwasi__insert_stdio(uvwasi, table, options->out, 1, "<stdout>");
+  if (err != UVWASI_ESUCCESS)
+    goto error_exit;
+
+  err = uvwasi__insert_stdio(uvwasi, table, options->err, 2, "<stderr>");
+  if (err != UVWASI_ESUCCESS)
+    goto error_exit;
 
   return UVWASI_ESUCCESS;
 error_exit:
diff --git a/deps/uvwasi/src/uvwasi.c b/deps/uvwasi/src/uvwasi.c
index 53b7699f590e53..c80fc7715c1dc0 100644
--- a/deps/uvwasi/src/uvwasi.c
+++ b/deps/uvwasi/src/uvwasi.c
@@ -34,6 +34,11 @@
 # define PATH_MAX_BYTES (PATH_MAX)
 #endif
 
+/* IBMi PASE does not support posix_fadvise() */
+#ifdef __PASE__
+# undef POSIX_FADV_NORMAL
+#endif
+
 static void* default_malloc(size_t size, void* mem_user_data) {
   return malloc(size);
 }
@@ -569,7 +574,7 @@ uvwasi_errno_t uvwasi_init(uvwasi_t* uvwasi, uvwasi_options_t* options) {
     }
   }
 
-  err = uvwasi_fd_table_init(uvwasi, &uvwasi->fds, options->fd_table_size);
+  err = uvwasi_fd_table_init(uvwasi, options);
   if (err != UVWASI_ESUCCESS)
     goto exit;
 
diff --git a/src/node_wasi.cc b/src/node_wasi.cc
index ed8f6c4fa4cb67..f4670ea36f6525 100644
--- a/src/node_wasi.cc
+++ b/src/node_wasi.cc
@@ -170,6 +170,9 @@ void WASI::New(const FunctionCallbackInfo<Value>& args) {
   const uint32_t argc = argv->Length();
   uvwasi_options_t options;
 
+  options.in = 0;
+  options.out = 1;
+  options.err = 2;
   options.fd_table_size = 3;
   options.argc = argc;
   options.argv = argc == 0 ? nullptr : new char*[argc];