diff --git a/.github/contributors/Pavle992.md b/.github/contributors/Pavle992.md
new file mode 100644
index 000000000..74ba69f46
--- /dev/null
+++ b/.github/contributors/Pavle992.md
@@ -0,0 +1,106 @@
+# spaCy contributor agreement
+
+This spaCy Contributor Agreement (**"SCA"**) is based on the
+[Oracle Contributor Agreement](http://www.oracle.com/technetwork/oca-405177.pdf).
+The SCA applies to any contribution that you make to any product or project
+managed by us (the **"project"**), and sets out the intellectual property rights
+you grant to us in the contributed materials. The term **"us"** shall mean
+[ExplosionAI UG (haftungsbeschränkt)](https://explosion.ai/legal). The term
+**"you"** shall mean the person or entity identified below.
+
+If you agree to be bound by these terms, fill in the information requested
+below and include the filled-in version with your first pull request, under the
+folder [`.github/contributors/`](/.github/contributors/). The name of the file
+should be your GitHub username, with the extension `.md`. For example, the user
+example_user would create the file `.github/contributors/example_user.md`.
+
+Read this agreement carefully before signing. These terms and conditions
+constitute a binding legal agreement.
+
+## Contributor Agreement
+
+1. The term "contribution" or "contributed materials" means any source code,
+object code, patch, tool, sample, graphic, specification, manual,
+documentation, or any other material posted or submitted by you to the project.
+
+2. With respect to any worldwide copyrights, or copyright applications and
+registrations, in your contribution:
+
+    * you hereby assign to us joint ownership, and to the extent that such
+    assignment is or becomes invalid, ineffective or unenforceable, you hereby
+    grant to us a perpetual, irrevocable, non-exclusive, worldwide, no-charge,
+    royalty-free, unrestricted license to exercise all rights under those
+    copyrights. This includes, at our option, the right to sublicense these same
+    rights to third parties through multiple levels of sublicensees or other
+    licensing arrangements;
+
+    * you agree that each of us can do all things in relation to your
+    contribution as if each of us were the sole owners, and if one of us makes
+    a derivative work of your contribution, the one who makes the derivative
+    work (or has it made will be the sole owner of that derivative work;
+
+    * you agree that you will not assert any moral rights in your contribution
+    against us, our licensees or transferees;
+
+    * you agree that we may register a copyright in your contribution and
+    exercise all ownership rights associated with it; and
+
+    * you agree that neither of us has any duty to consult with, obtain the
+    consent of, pay or render an accounting to the other for any use or
+    distribution of your contribution.
+
+3. With respect to any patents you own, or that you can license without payment
+to any third party, you hereby grant to us a perpetual, irrevocable,
+non-exclusive, worldwide, no-charge, royalty-free license to:
+
+    * make, have made, use, sell, offer to sell, import, and otherwise transfer
+    your contribution in whole or in part, alone or in combination with or
+    included in any product, work or materials arising out of the project to
+    which your contribution was submitted, and
+
+    * at our option, to sublicense these same rights to third parties through
+    multiple levels of sublicensees or other licensing arrangements.
+
+4. Except as set out above, you keep all right, title, and interest in your
+contribution. The rights that you grant to us under these terms are effective
+on the date you first submitted a contribution to us, even if your submission
+took place before the date you sign these terms.
+
+5. You covenant, represent, warrant and agree that:
+
+    * Each contribution that you submit is and shall be an original work of
+    authorship and you can legally grant the rights set out in this SCA;
+
+    * to the best of your knowledge, each contribution will not violate any
+    third party's copyrights, trademarks, patents, or other intellectual
+    property rights; and
+
+    * each contribution shall be in compliance with U.S. export control laws and
+    other applicable export and import laws. You agree to notify us if you
+    become aware of any circumstance which would make any of the foregoing
+    representations inaccurate in any respect. We may publicly disclose your
+    participation in the project, including the fact that you have signed the SCA.
+
+6. This SCA is governed by the laws of the State of California and applicable
+U.S. Federal law. Any choice of law rules will not apply.
+
+7. Please place an “x” on one of the applicable statement below. Please do NOT
+mark both statements:
+
+    * [x] I am signing on behalf of myself as an individual and no other person
+    or entity, including my employer, has or will have rights with respect to my
+    contributions.
+
+    * [ ] I am signing on behalf of my employer or a legal entity and I have the
+    actual authority to contractually bind that entity.
+
+## Contributor Details
+
+| Field                          | Entry                |
+|------------------------------- | -------------------- |
+| Name                           | Pavle Vidanović      |
+| Company name (if applicable)   | -                    |
+| Title or role (if applicable)  | -                    |
+| Date                           | August 4, 2019       |
+| GitHub username                | Pavle992             |
+| Website (optional)             | -                    |
diff --git a/spacy/lang/rs/__init__.py b/spacy/lang/rs/__init__.py
new file mode 100644
index 000000000..4228fb193
--- /dev/null
+++ b/spacy/lang/rs/__init__.py
@@ -0,0 +1,28 @@
+# coding: utf8
+from __future__ import unicode_literals
+
+from .stop_words import STOP_WORDS
+
+from ..tokenizer_exceptions import BASE_EXCEPTIONS
+from ..norm_exceptions import BASE_NORMS
+from ...language import Language
+from ...attrs import LANG, NORM
+from ...util import update_exc, add_lookups
+
+
+class SerbianDefaults(Language.Defaults):
+    lex_attr_getters = dict(Language.Defaults.lex_attr_getters)
+    lex_attr_getters[LANG] = lambda text: "rs"
+    lex_attr_getters[NORM] = add_lookups(
+        Language.Defaults.lex_attr_getters[NORM], BASE_NORMS
+    )
+    tokenizer_exceptions = update_exc(BASE_EXCEPTIONS)
+    stop_words = STOP_WORDS
+
+
+class Serbian(Language):
+    lang = "rs"
+    Defaults = SerbianDefaults
+
+
+__all__ = ["Serbian"]
diff --git a/spacy/lang/rs/stop_words.py b/spacy/lang/rs/stop_words.py
new file mode 100644
index 000000000..9712327f8
--- /dev/null
+++ b/spacy/lang/rs/stop_words.py
@@ -0,0 +1,397 @@
+# coding: utf8
+from __future__ import unicode_literals
+
+
+STOP_WORDS = set(
+    """
+а
+авај
+ако
+ал
+али
+арх
+ау
+ах
+аха
+ај
+бар
+би
+била
+били
+било
+бисмо
+бисте
+бих
+бијасмо
+бијасте
+бијах
+бијаху
+бијаше
+биће
+близу
+број
+брр
+буде
+будимо
+будите
+буду
+будући
+бум
+бућ
+вам
+вама
+вас
+ваша
+ваше
+вашим
+вашима
+ваљда
+веома
+вероватно
+већ
+већина
+ви
+видео
+више
+врло
+врх
+га
+где
+гиц
+год
+горе
+гђекоје
+да
+дакле
+дана
+данас
+дај
+два
+де
+дедер
+делимице
+делимично
+дем
+до
+добар
+добити
+довечер
+докле
+доле
+донекле
+досад
+доскоро
+дотад
+дотле
+дошао
+доћи
+другамо
+другде
+други
+е
+ево
+ено
+ето
+ех
+ехе
+еј
+желела
+желеле
+желели
+желело
+желех
+желећи
+жели
+за
+заиста
+зар
+затим
+зато
+захвалити
+зашто
+збиља
+зимус
+знати
+зум
+и
+иде
+из
+изван
+изволи
+између
+изнад
+икада
+икакав
+икаква
+икакве
+икакви
+икаквим
+икаквима
+икаквих
+икакво
+икаквог
+икаквога
+икаквом
+икаквоме
+икаквој
+или
+им
+има
+имам
+имао
+испод
+их
+ију
+ићи
+кад
+када
+кога
+којекакав
+којима
+коју
+кришом
+лани
+ли
+мали
+мањи
+ме
+мене
+мени
+ми
+мимо
+мисли
+много
+могу
+мора
+морао
+мој
+моја
+моје
+моји
+моју
+моћи
+му
+на
+над
+након
+нам
+нама
+нас
+наша
+наше
+нашег
+наши
+наћи
+не
+негде
+нека
+некад
+неке
+неког
+неку
+нема
+немам
+неко
+неће
+нећемо
+нећете
+нећеш
+нећу
+ни
+никада
+никога
+никоје
+никоји
+никоју
+нисам
+ниси
+нисте
+нису
+ништа
+ниједан
+но
+о
+ова
+овако
+овамо
+овај
+овде
+ове
+овим
+овима
+ово
+овој
+од
+одмах
+око
+около
+он
+онај
+оне
+оним
+онима
+оном
+оној
+ону
+осим
+остали
+отишао
+па
+пак
+питати
+по
+поводом
+под
+подаље
+пожељан
+пожељна
+поиздаље
+поименце
+понекад
+попреко
+поред
+после
+потаман
+потрбушке
+поуздано
+почетак
+поједини
+правити
+први
+преко
+према
+прије
+пут
+пљус
+радије
+с
+са
+сав
+сада
+сам
+само
+сасвим
+сва
+сваки
+сви
+свим
+свог
+свом
+свој
+своја
+своје
+своју
+сву
+свугде
+се
+себе
+себи
+си
+смети
+смо
+ствар
+стварно
+сте
+су
+сутра
+та
+таèно
+тако
+такође
+тамо
+твој
+твоја
+твоје
+твоји
+твоју
+те
+тебе
+теби
+ти
+тима
+то
+томе
+тој
+ту
+у
+увек
+увијек
+уз
+уза
+узалуд
+уздуж
+узети
+умало
+унутра
+употребити
+упркос
+учинио
+учинити
+хало
+хвала
+хеј
+хм
+хоп
+хоће
+хоћемо
+хоћете
+хоћеш
+хоћу
+хтедосте
+хтедох
+хтедоше
+хтела
+хтеле
+хтели
+хтео
+хтејасмо
+хтејасте
+хтејаху
+хура
+често
+чијем
+чији
+чијим
+чијима
+шиц
+штагод
+што
+штогод
+ја
+је
+један
+једини
+једна
+једне
+једни
+једно
+једном
+јер
+јесам
+јеси
+јесмо
+јесу
+јим
+јој
+ју
+јуче
+његова
+његово
+њезин
+њезина
+њезино
+њему
+њен
+њим
+њима
+њихова
+њихово
+њој
+њу
+ће
+ћемо
+ћете
+ћеш
+ћу
+""".split()
+)
diff --git a/spacy/tests/lang/test_initialize.py b/spacy/tests/lang/test_initialize.py
index 9cd0a78c3..f6938c252 100644
--- a/spacy/tests/lang/test_initialize.py
+++ b/spacy/tests/lang/test_initialize.py
@@ -10,8 +10,8 @@ from spacy.util import get_lang_class
 # excluded: ja, ru, th, uk, vi, zh
 LANGUAGES = ["af", "ar", "bg", "bn", "ca", "cs", "da", "de", "el", "en", "es",
              "et", "fa", "fi", "fr", "ga", "he", "hi", "hr", "hu", "id", "is",
-             "it", "kn", "lt", "lv", "nb", "nl", "pl", "pt", "ro", "si", "sk",
-             "sl", "sq", "sv", "ta", "te", "tl", "tr", "tt", "ur"]
+             "it", "kn", "lt", "lv", "nb", "nl", "pl", "pt", "ro", "rs", "si",
+             "sk", "sl", "sq", "sv", "ta", "te", "tl", "tr", "tt", "ur"]
 # fmt: on