diff --git a/checksum/mdbx-0.1.1.gem.sha512 b/checksum/mdbx-0.1.1.gem.sha512
deleted file mode 100644
index 26d971f..0000000
--- a/checksum/mdbx-0.1.1.gem.sha512
+++ /dev/null
@@ -1 +0,0 @@
-c8c39fd3b2921c757269c3f870d93922a0b763384241d0d5d51f34805295b507a23c23d368aa33c26cde0fd2533398bb353329b869c59c445f18cb655e5d53ed
\ No newline at end of file
diff --git a/checksum/mdbx-0.2.1.gem.sha512 b/checksum/mdbx-0.2.1.gem.sha512
deleted file mode 100644
index f77b347..0000000
--- a/checksum/mdbx-0.2.1.gem.sha512
+++ /dev/null
@@ -1 +0,0 @@
-6910d9836d84c1d38516dde012797f15ea45d9ffe71c0392ef1f4da9b7c0ede2a134fd681da305b3697ffe95be9beba9e6179acfcf2e7cea48762159a192f1df
\ No newline at end of file
diff --git a/checksum/mdbx-0.3.0.gem.sha512 b/checksum/mdbx-0.3.0.gem.sha512
deleted file mode 100644
index 7b75354..0000000
--- a/checksum/mdbx-0.3.0.gem.sha512
+++ /dev/null
@@ -1 +0,0 @@
-140aecd4ce4b6c0172ae474339e912a1038cd74400bc5664921a17c3fbb2d1844d36ba8d77f74c00c71a0259195befdc551a50d65a4dd5bebb459dea5a3963c3
\ No newline at end of file
diff --git a/checksum/mdbx-0.3.2.gem.sha512 b/checksum/mdbx-0.3.2.gem.sha512
deleted file mode 100644
index c708740..0000000
--- a/checksum/mdbx-0.3.2.gem.sha512
+++ /dev/null
@@ -1 +0,0 @@
-bf7f3cc8aac23d39ff58b899fba8a6d2cbd8691f50e05df182280ed3e683666e09a9fdd1de12e8564f86970882aed616679ba152edcc07f1722bab4c67d0ea74
\ No newline at end of file
diff --git a/ext/mdbx_ext/extconf.rb b/ext/mdbx_ext/extconf.rb
index 47580c2..f266102 100755
--- a/ext/mdbx_ext/extconf.rb
+++ b/ext/mdbx_ext/extconf.rb
@@ -4,6 +4,7 @@
 require 'mkmf'
 
 $CFLAGS << ' -Wno-suggest-attribute=format'
+$CFLAGS << ' -Wno-unknown-warning-option'
 
 have_library( 'mdbx' )  or abort "No mdbx library!"
 have_header( 'mdbx.h' ) or abort "No mdbx.h header!"
diff --git a/ext/mdbx_ext/stats.c b/ext/mdbx_ext/stats.c
index c645a80..8c57d8d 100644
--- a/ext/mdbx_ext/stats.c
+++ b/ext/mdbx_ext/stats.c
@@ -65,21 +65,21 @@ rmdbx_gather_datafile_stats(
 	rb_hash_aset( environ, ID2SYM(rb_intern("datafile")), datafile );
 
 	rb_hash_aset( datafile, ID2SYM(rb_intern("size_current")),
-			INT2NUM(menvinfo.mi_geo.current) );
+			LONG2NUM(menvinfo.mi_geo.current) );
 	rb_hash_aset( datafile, ID2SYM(rb_intern("pages")),
-			INT2NUM(menvinfo.mi_geo.current / mstat.ms_psize) );
+			LONG2NUM(menvinfo.mi_geo.current / mstat.ms_psize) );
 
 	if ( menvinfo.mi_geo.lower != menvinfo.mi_geo.upper ) {
 		rb_hash_aset( datafile, ID2SYM(rb_intern("type")),
 			rb_str_new_cstr("dynamic") );
 		rb_hash_aset( datafile, ID2SYM(rb_intern("size_lower")),
-			INT2NUM( menvinfo.mi_geo.lower ) );
+			LONG2NUM( menvinfo.mi_geo.lower ) );
 		rb_hash_aset( datafile, ID2SYM(rb_intern("size_upper")),
 			LONG2FIX( menvinfo.mi_geo.upper ) );
 		rb_hash_aset( datafile, ID2SYM(rb_intern("growth_step")),
-			INT2NUM( menvinfo.mi_geo.grow ) );
+			LONG2NUM( menvinfo.mi_geo.grow ) );
 		rb_hash_aset( datafile, ID2SYM(rb_intern("shrink_threshold")),
-			INT2NUM( menvinfo.mi_geo.shrink ) );
+			LONG2NUM( menvinfo.mi_geo.shrink ) );
 	}
 	else {
 		rb_hash_aset( datafile, ID2SYM(rb_intern("type")),
@@ -115,9 +115,9 @@ rmdbx_gather_environment_stats(
 	rb_hash_aset( environ, ID2SYM(rb_intern("entries")),
 			LONG2NUM(mstat.ms_entries) );
 	rb_hash_aset( environ, ID2SYM(rb_intern("last_txnid")),
-			INT2NUM(menvinfo.mi_recent_txnid) );
+			LONG2NUM(menvinfo.mi_recent_txnid) );
 	rb_hash_aset( environ, ID2SYM(rb_intern("last_reader_txnid")),
-			INT2NUM(menvinfo.mi_latter_reader_txnid) );
+			LONG2NUM(menvinfo.mi_latter_reader_txnid) );
 	rb_hash_aset( environ, ID2SYM(rb_intern("max_readers")),
 			INT2NUM(menvinfo.mi_maxreaders) );
 	rb_hash_aset( environ, ID2SYM(rb_intern("readers_in_use")),
@@ -153,7 +153,7 @@ rmdbx_reader_list_cb(
 	rb_hash_aset( reader, ID2SYM(rb_intern("pid")),
 			LONG2FIX( pid ) );
 	rb_hash_aset( reader, ID2SYM(rb_intern("thread")),
-			LONG2FIX( thread ) );
+			LONG2FIX( (uint64_t)thread ) );
 	rb_hash_aset( reader, ID2SYM(rb_intern("txnid")),
 			LONG2FIX( txnid ) );
 	rb_hash_aset( reader, ID2SYM(rb_intern("lag")),