diff --git a/compat/jansson/CMakeLists.txt b/compat/jansson/CMakeLists.txt
index 9a73da225..7bd74c671 100644
--- a/compat/jansson/CMakeLists.txt
+++ b/compat/jansson/CMakeLists.txt
@@ -6,6 +6,8 @@ add_definitions(-DHAVE_CONFIG_H)
 # Add the lib sources.
 file(GLOB JANSSON_SRC *.c)
 
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Os")
+
 set(JANSSON_HDR_PRIVATE
    ${CMAKE_CURRENT_SOURCE_DIR}/hashtable.h
    ${CMAKE_CURRENT_SOURCE_DIR}/jansson_private.h
diff --git a/compat/jansson/dump.c b/compat/jansson/dump.c
index 6b1aabd45..a23fabb7c 100644
--- a/compat/jansson/dump.c
+++ b/compat/jansson/dump.c
@@ -9,13 +9,17 @@
 #define _GNU_SOURCE
 #endif
 
+#include "jansson_private.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 
 #include "jansson.h"
-#include "jansson_private.h"
 #include "strbuffer.h"
 #include "utf.h"
 
@@ -25,11 +29,28 @@
 #define FLAGS_TO_INDENT(f)      ((f) & 0x1F)
 #define FLAGS_TO_PRECISION(f)   (((f) >> 11) & 0x1F)
 
+struct buffer {
+    const size_t size;
+    size_t used;
+    char *data;
+};
+
 static int dump_to_strbuffer(const char *buffer, size_t size, void *data)
 {
     return strbuffer_append_bytes((strbuffer_t *)data, buffer, size);
 }
 
+static int dump_to_buffer(const char *buffer, size_t size, void *data)
+{
+    struct buffer *buf = (struct buffer *)data;
+
+    if(buf->used + size <= buf->size)
+        memcpy(&buf->data[buf->used], buffer, size);
+
+    buf->used += size;
+    return 0;
+}
+
 static int dump_to_file(const char *buffer, size_t size, void *data)
 {
     FILE *dest = (FILE *)data;
@@ -38,6 +59,16 @@ static int dump_to_file(const char *buffer, size_t size, void *data)
     return 0;
 }
 
+static int dump_to_fd(const char *buffer, size_t size, void *data)
+{
+    int *dest = (int *)data;
+#ifdef HAVE_UNISTD_H
+    if(write(*dest, buffer, size) == (ssize_t)size)
+        return 0;
+#endif
+    return -1;
+}
+
 /* 32 spaces (the maximum indentation size) */
 static const char whitespace[] = "                                ";
 
@@ -168,6 +199,10 @@ static int compare_keys(const void *key1, const void *key2)
 static int do_dump(const json_t *json, size_t flags, int depth,
                    json_dump_callback_t dump, void *data)
 {
+    int embed = flags & JSON_EMBED;
+
+    flags &= ~JSON_EMBED;
+
     if(!json)
         return -1;
 
@@ -227,11 +262,11 @@ static int do_dump(const json_t *json, size_t flags, int depth,
 
             n = json_array_size(json);
 
-            if(dump("[", 1, data))
+            if(!embed && dump("[", 1, data))
                 goto array_error;
             if(n == 0) {
                 array->visited = 0;
-                return dump("]", 1, data);
+                return embed ? 0 : dump("]", 1, data);
             }
             if(dump_indent(flags, depth + 1, 0, dump, data))
                 goto array_error;
@@ -255,7 +290,7 @@ static int do_dump(const json_t *json, size_t flags, int depth,
             }
 
             array->visited = 0;
-            return dump("]", 1, data);
+            return embed ? 0 : dump("]", 1, data);
 
         array_error:
             array->visited = 0;
@@ -286,11 +321,11 @@ static int do_dump(const json_t *json, size_t flags, int depth,
 
             iter = json_object_iter((json_t *)json);
 
-            if(dump("{", 1, data))
+            if(!embed && dump("{", 1, data))
                 goto object_error;
             if(!iter) {
                 object->visited = 0;
-                return dump("}", 1, data);
+                return embed ? 0 : dump("}", 1, data);
             }
             if(dump_indent(flags, depth + 1, 0, dump, data))
                 goto object_error;
@@ -386,7 +421,7 @@ static int do_dump(const json_t *json, size_t flags, int depth,
             }
 
             object->visited = 0;
-            return dump("}", 1, data);
+            return embed ? 0 : dump("}", 1, data);
 
         object_error:
             object->visited = 0;
@@ -416,11 +451,26 @@ char *json_dumps(const json_t *json, size_t flags)
     return result;
 }
 
+size_t json_dumpb(const json_t *json, char *buffer, size_t size, size_t flags)
+{
+    struct buffer buf = { size, 0, buffer };
+
+    if(json_dump_callback(json, dump_to_buffer, (void *)&buf, flags))
+        return 0;
+
+    return buf.used;
+}
+
 int json_dumpf(const json_t *json, FILE *output, size_t flags)
 {
     return json_dump_callback(json, dump_to_file, (void *)output, flags);
 }
 
+int json_dumpfd(const json_t *json, int output, size_t flags)
+{
+    return json_dump_callback(json, dump_to_fd, (void *)&output, flags);
+}
+
 int json_dump_file(const json_t *json, const char *path, size_t flags)
 {
     int result;
diff --git a/compat/jansson/hashtable_seed.c b/compat/jansson/hashtable_seed.c
index 751e0e326..8aed54068 100644
--- a/compat/jansson/hashtable_seed.c
+++ b/compat/jansson/hashtable_seed.c
@@ -168,12 +168,12 @@ static uint32_t generate_seed() {
     int done = 0;
 
 #if !defined(_WIN32) && defined(USE_URANDOM)
-    if (!done && seed_from_urandom(&seed) == 0)
+    if (seed_from_urandom(&seed) == 0)
         done = 1;
 #endif
 
 #if defined(_WIN32) && defined(USE_WINDOWS_CRYPTOAPI)
-    if (!done && seed_from_windows_cryptoapi(&seed) == 0)
+    if (seed_from_windows_cryptoapi(&seed) == 0)
         done = 1;
 #endif
 
diff --git a/compat/jansson/jansson.h b/compat/jansson/jansson.h
index 591f2a944..a5927bd63 100644
--- a/compat/jansson/jansson.h
+++ b/compat/jansson/jansson.h
@@ -21,11 +21,11 @@ extern "C" {
 /* version */
 
 #define JANSSON_MAJOR_VERSION  2
-#define JANSSON_MINOR_VERSION  9
+#define JANSSON_MINOR_VERSION  10
 #define JANSSON_MICRO_VERSION  0
 
 /* Micro version is omitted if it's 0 */
-#define JANSSON_VERSION  "2.9"
+#define JANSSON_VERSION  "2.10"
 
 /* Version as a 3-byte hex number, e.g. 0x010201 == 1.2.1. Use this
    for numeric comparisons, e.g. #if JANSSON_VERSION_HEX >= ... */
@@ -273,6 +273,7 @@ typedef size_t (*json_load_callback_t)(void *buffer, size_t buflen, void *data);
 json_t *json_loads(const char *input, size_t flags, json_error_t *error);
 json_t *json_loadb(const char *buffer, size_t buflen, size_t flags, json_error_t *error);
 json_t *json_loadf(FILE *input, size_t flags, json_error_t *error);
+json_t *json_loadfd(int input, size_t flags, json_error_t *error);
 json_t *json_load_file(const char *path, size_t flags, json_error_t *error);
 json_t *json_load_callback(json_load_callback_t callback, void *data, size_t flags, json_error_t *error);
 
@@ -288,11 +289,14 @@ json_t *json_load_callback(json_load_callback_t callback, void *data, size_t fla
 #define JSON_ENCODE_ANY         0x200
 #define JSON_ESCAPE_SLASH       0x400
 #define JSON_REAL_PRECISION(n)  (((n) & 0x1F) << 11)
+#define JSON_EMBED              0x10000
 
 typedef int (*json_dump_callback_t)(const char *buffer, size_t size, void *data);
 
 char *json_dumps(const json_t *json, size_t flags);
+size_t json_dumpb(const json_t *json, char *buffer, size_t size, size_t flags);
 int json_dumpf(const json_t *json, FILE *output, size_t flags);
+int json_dumpfd(const json_t *json, int output, size_t flags);
 int json_dump_file(const json_t *json, const char *path, size_t flags);
 int json_dump_callback(const json_t *json, json_dump_callback_t callback, void *data, size_t flags);
 
diff --git a/compat/jansson/jansson_private.h b/compat/jansson/jansson_private.h
index 4a4927bb2..5ed961582 100644
--- a/compat/jansson/jansson_private.h
+++ b/compat/jansson/jansson_private.h
@@ -8,6 +8,7 @@
 #ifndef JANSSON_PRIVATE_H
 #define JANSSON_PRIVATE_H
 
+#include "jansson_private_config.h"
 #include <stddef.h>
 #include "jansson.h"
 #include "hashtable.h"
diff --git a/compat/jansson/load.c b/compat/jansson/load.c
index 7a8f96ecb..c212489a1 100644
--- a/compat/jansson/load.c
+++ b/compat/jansson/load.c
@@ -9,15 +9,19 @@
 #define _GNU_SOURCE
 #endif
 
+#include "jansson_private.h"
+
 #include <errno.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 
 #include "jansson.h"
-#include "jansson_private.h"
 #include "strbuffer.h"
 #include "utf.h"
 
@@ -340,7 +344,7 @@ static void lex_scan_string(lex_t *lex, json_error_t *error)
             /* control character */
             lex_unget_unsave(lex, c);
             if(c == '\n')
-                error_set(error, lex, "unexpected newline", c);
+                error_set(error, lex, "unexpected newline");
             else
                 error_set(error, lex, "control character 0x%x", c);
             goto out;
@@ -914,7 +918,7 @@ static json_t *parse_json(lex_t *lex, size_t flags, json_error_t *error)
 typedef struct
 {
     const char *data;
-    int pos;
+    size_t pos;
 } string_data_t;
 
 static int string_get(void *data)
@@ -1028,6 +1032,45 @@ json_t *json_loadf(FILE *input, size_t flags, json_error_t *error)
     return result;
 }
 
+static int fd_get_func(int *fd)
+{
+    uint8_t c;
+#ifdef HAVE_UNISTD_H
+    if (read(*fd, &c, 1) == 1)
+        return c;
+#endif
+    return EOF;
+}
+
+json_t *json_loadfd(int input, size_t flags, json_error_t *error)
+{
+    lex_t lex;
+    const char *source;
+    json_t *result;
+
+#ifdef HAVE_UNISTD_H
+    if(input == STDIN_FILENO)
+        source = "<stdin>";
+    else
+#endif
+        source = "<stream>";
+
+    jsonp_error_init(error, source);
+
+    if (input < 0) {
+        error_set(error, NULL, "wrong arguments");
+        return NULL;
+    }
+
+    if(lex_init(&lex, (get_func)fd_get_func, flags, &input))
+        return NULL;
+
+    result = parse_json(&lex, flags, error);
+
+    lex_close(&lex);
+    return result;
+}
+
 json_t *json_load_file(const char *path, size_t flags, json_error_t *error)
 {
     json_t *result;
diff --git a/version.h b/version.h
index 330d96975..a17b3301f 100644
--- a/version.h
+++ b/version.h
@@ -27,7 +27,7 @@
 #define APP_ID        "xmrig"
 #define APP_NAME      "XMRig"
 #define APP_DESC      "Monero (XMR) CPU miner"
-#define APP_VERSION   "0.8.3"
+#define APP_VERSION   "0.8.3-dev"
 #define APP_DOMAIN    "xmrig.com"
 #define APP_SITE      "www.xmrig.com"
 #define APP_COPYRIGHT "Copyright (C) 2016-2017 xmrig.com"