diff --git a/php/ext/google/protobuf/php-upb.c b/php/ext/google/protobuf/php-upb.c
index 4c6a56a43..c56a567ca 100644
--- a/php/ext/google/protobuf/php-upb.c
+++ b/php/ext/google/protobuf/php-upb.c
@@ -6711,6 +6711,10 @@ size_t _upb_symtab_bytesloaded(const upb_symtab *s) {
   return s->bytes_loaded;
 }
 
+upb_arena *_upb_symtab_arena(const upb_symtab *s) {
+  return s->arena;
+}
+
 #undef CHK_OOM
 
 
@@ -8020,7 +8024,7 @@ static void jsondec_field(jsondec *d, upb_msg *msg, const upb_msgdef *m) {
 
   if (!f) {
     if ((d->options & UPB_JSONDEC_IGNOREUNKNOWN) == 0) {
-      jsondec_errf(d, "Unknown field: '" UPB_STRVIEW_FORMAT "'",
+      jsondec_errf(d, "No such field: " UPB_STRVIEW_FORMAT,
                    UPB_STRVIEW_ARGS(name));
     }
     jsondec_skipval(d);
@@ -8173,7 +8177,8 @@ static void jsondec_timestamp(jsondec *d, upb_msg *msg, const upb_msgdef *m) {
 
   {
     /* [+-]08:00 or Z */
-    int ofs = 0;
+    int ofs_hour = 0;
+    int ofs_min = 0;
     bool neg = false;
 
     if (ptr == end) goto malformed;
@@ -8184,9 +8189,10 @@ static void jsondec_timestamp(jsondec *d, upb_msg *msg, const upb_msgdef *m) {
         /* fallthrough */
       case '+':
         if ((end - ptr) != 5) goto malformed;
-        ofs = jsondec_tsdigits(d, &ptr, 2, ":00");
-        ofs *= 60 * 60;
-        seconds.int64_val += (neg ? ofs : -ofs);
+        ofs_hour = jsondec_tsdigits(d, &ptr, 2, ":");
+        ofs_min = jsondec_tsdigits(d, &ptr, 2, NULL);
+        ofs_min = ((ofs_hour * 60) + ofs_min) * 60;
+        seconds.int64_val += (neg ? ofs_min : -ofs_min);
         break;
       case 'Z':
         if (ptr != end) goto malformed;
diff --git a/php/ext/google/protobuf/php-upb.h b/php/ext/google/protobuf/php-upb.h
index 996a6d8c8..bd72cd9c0 100644
--- a/php/ext/google/protobuf/php-upb.h
+++ b/php/ext/google/protobuf/php-upb.h
@@ -4178,6 +4178,7 @@ const upb_filedef *upb_symtab_addfile(
     upb_symtab *s, const google_protobuf_FileDescriptorProto *file,
     upb_status *status);
 size_t _upb_symtab_bytesloaded(const upb_symtab *s);
+upb_arena *_upb_symtab_arena(const upb_symtab *s);
 
 /* For generated code only: loads a generated descriptor. */
 typedef struct upb_def_init {
diff --git a/ruby/ext/google/protobuf_c/ruby-upb.c b/ruby/ext/google/protobuf_c/ruby-upb.c
index 9c048da98..a7aeda2df 100755
--- a/ruby/ext/google/protobuf_c/ruby-upb.c
+++ b/ruby/ext/google/protobuf_c/ruby-upb.c
@@ -7793,7 +7793,8 @@ static void jsondec_timestamp(jsondec *d, upb_msg *msg, const upb_msgdef *m) {
 
   {
     /* [+-]08:00 or Z */
-    int ofs = 0;
+    int ofs_hour = 0;
+    int ofs_min = 0;
     bool neg = false;
 
     if (ptr == end) goto malformed;
@@ -7804,9 +7805,10 @@ static void jsondec_timestamp(jsondec *d, upb_msg *msg, const upb_msgdef *m) {
         /* fallthrough */
       case '+':
         if ((end - ptr) != 5) goto malformed;
-        ofs = jsondec_tsdigits(d, &ptr, 2, ":00");
-        ofs *= 60 * 60;
-        seconds.int64_val += (neg ? ofs : -ofs);
+        ofs_hour = jsondec_tsdigits(d, &ptr, 2, ":");
+        ofs_min = jsondec_tsdigits(d, &ptr, 2, NULL);
+        ofs_min = ((ofs_hour * 60) + ofs_min) * 60;
+        seconds.int64_val += (neg ? ofs_min : -ofs_min);
         break;
       case 'Z':
         if (ptr != end) goto malformed;
diff --git a/ruby/ext/google/protobuf_c/ruby-upb.h b/ruby/ext/google/protobuf_c/ruby-upb.h
index 106c73b69..fa0439355 100755
--- a/ruby/ext/google/protobuf_c/ruby-upb.h
+++ b/ruby/ext/google/protobuf_c/ruby-upb.h
@@ -4161,7 +4161,6 @@ const upb_filedef *upb_filedef_dep(const upb_filedef *f, int i);
 const upb_msgdef *upb_filedef_msg(const upb_filedef *f, int i);
 const upb_enumdef *upb_filedef_enum(const upb_filedef *f, int i);
 const upb_symtab *upb_filedef_symtab(const upb_filedef *f);
-upb_arena *_upb_symtab_arena(const upb_symtab *s);
 
 /* upb_symtab *****************************************************************/
 
@@ -4179,6 +4178,7 @@ const upb_filedef *upb_symtab_addfile(
     upb_symtab *s, const google_protobuf_FileDescriptorProto *file,
     upb_status *status);
 size_t _upb_symtab_bytesloaded(const upb_symtab *s);
+upb_arena *_upb_symtab_arena(const upb_symtab *s);
 
 /* For generated code only: loads a generated descriptor. */
 typedef struct upb_def_init {