diff --git a/playground/pkg/encoding/gob.a.js b/playground/pkg/encoding/gob.a.js
new file mode 100644
index 00000000..17422071
Binary files /dev/null and b/playground/pkg/encoding/gob.a.js differ
diff --git a/playground/pkg/go/doc.a.js b/playground/pkg/go/doc.a.js
new file mode 100644
index 00000000..81b876b3
Binary files /dev/null and b/playground/pkg/go/doc.a.js differ
diff --git a/playground/update.sh b/playground/update.sh
index b554bde8..496c9307 100755
--- a/playground/update.sh
+++ b/playground/update.sh
@@ -15,7 +15,7 @@ mkdir -p $PKG/github.com/gopherjs/gopherjs
 cp $GOPATH/pkg/darwin_js_min/github.com/gopherjs/gopherjs/js.a $PKG/github.com/gopherjs/gopherjs/js.a
 cp $GOPATH/pkg/darwin_js_min/github.com/gopherjs/gopherjs/nosync.a $PKG/github.com/gopherjs/gopherjs/nosync.a
 
-gopherjs install -m github.com/gopherjs/gopherjs/js archive/tar archive/zip bufio bytes compress/bzip2 compress/flate compress/gzip compress/lzw compress/zlib container/heap container/list container/ring crypto/aes crypto/cipher crypto/des crypto/dsa crypto/ecdsa crypto/elliptic crypto/hmac crypto/md5 crypto/rand crypto/rc4 crypto/rsa crypto/sha1 crypto/sha256 crypto/sha512 crypto/subtle database/sql/driver debug/gosym debug/pe encoding/ascii85 encoding/asn1 encoding/base32 encoding/base64 encoding/binary encoding/csv encoding/hex encoding/json encoding/pem encoding/xml errors fmt go/format go/printer go/token hash/adler32 hash/crc32 hash/crc64 hash/fnv html html/template image image/color image/draw image/gif image/jpeg image/png index/suffixarray io io/ioutil math math/big math/cmplx math/rand mime net/http/cookiejar net/http/fcgi net/http/httptest net/http/httputil net/mail net/smtp net/textproto net/url path path/filepath reflect regexp regexp/syntax sort strconv strings sync/atomic testing testing/iotest testing/quick text/scanner text/tabwriter text/template text/template/parse time unicode unicode/utf16 unicode/utf8
+gopherjs install -m github.com/gopherjs/gopherjs/js archive/tar archive/zip bufio bytes compress/bzip2 compress/flate compress/gzip compress/lzw compress/zlib container/heap container/list container/ring crypto/aes crypto/cipher crypto/des crypto/dsa crypto/ecdsa crypto/elliptic crypto/hmac crypto/md5 crypto/rand crypto/rc4 crypto/rsa crypto/sha1 crypto/sha256 crypto/sha512 crypto/subtle database/sql/driver debug/gosym debug/pe encoding/ascii85 encoding/asn1 encoding/base32 encoding/base64 encoding/binary encoding/csv encoding/gob encoding/hex encoding/json encoding/pem encoding/xml errors fmt go/ast go/doc go/format go/printer go/token hash/adler32 hash/crc32 hash/crc64 hash/fnv html html/template image image/color image/draw image/gif image/jpeg image/png index/suffixarray io io/ioutil math math/big math/cmplx math/rand mime net/http/cookiejar net/http/fcgi net/http/httptest net/http/httputil net/mail net/smtp net/textproto net/url path path/filepath reflect regexp regexp/syntax sort strconv strings sync/atomic testing testing/iotest testing/quick text/scanner text/tabwriter text/template text/template/parse time unicode unicode/utf16 unicode/utf8
 cp -r $GOROOT/pkg/darwin_js_min/* $PKG
 cp -r $GOROOT/pkg/darwin_amd64_js_min/* $PKG