diff --git a/.github/workflows/make_test_ebook.yaml b/.github/workflows/make_test_ebook.yaml
index 15b4eb5..76d6ac0 100644
--- a/.github/workflows/make_test_ebook.yaml
+++ b/.github/workflows/make_test_ebook.yaml
@@ -13,6 +13,16 @@ env:
   BBM_CAIYUN_API_KEY: ${{ secrets.BBM_CAIYUN_API_KEY }}
 
 jobs:
+  typos-check:
+    name: Spell Check with Typos
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Actions Repository
+        uses: actions/checkout@v3
+      - name: Check spelling with custom config file
+        uses: crate-ci/typos@v1.16.6
+        with:
+          config: ./typos.toml
   testing:
     runs-on: ubuntu-latest
     steps:
diff --git a/README.md b/README.md
index bd21daa..75659fb 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ Find more info here for using liteLLM: https://github.com/BerriAI/litellm/blob/m
 - Use `--proxy` option to specify proxy server for internet access. Enter a string such as `http://127.0.0.1:7890`.
 - Use `--resume` option to manually resume the process after an interruption.
 - epub is made of html files. By default, we only translate contents in `<p>`.
-   Use `--translate-tags` to specify tags need for translation. Use comma to seperate multiple tags. For example:
+   Use `--translate-tags` to specify tags need for translation. Use comma to separate multiple tags. For example:
    `--translate-tags h1,h2,h3,p,div`
 - Use `--book_from` option to specify e-reader type (Now only `kobo` is available), and use `--device_path` to specify the mounting point.
 - If you want to change api_base like using Cloudflare Workers, use `--api_base <URL>` to support it.
diff --git a/book_maker/cli.py b/book_maker/cli.py
index 991e540..a640fac 100644
--- a/book_maker/cli.py
+++ b/book_maker/cli.py
@@ -274,7 +274,7 @@ So you are close to reaching the limit. You have to choose your own value, there
             options.openai_key
             or env.get(
                 "OPENAI_API_KEY",
-            )  # XXX: for backward compatability, deprecate soon
+            )  # XXX: for backward compatibility, deprecate soon
             or env.get(
                 "BBM_OPENAI_API_KEY",
             )  # suggest adding `BBM_` prefix for all the bilingual_book_maker ENVs.
@@ -287,15 +287,15 @@ So you are close to reaching the limit. You have to choose your own value, there
     elif options.model == "caiyun":
         API_KEY = options.caiyun_key or env.get("BBM_CAIYUN_API_KEY")
         if not API_KEY:
-            raise Exception("Please provid caiyun key")
+            raise Exception("Please provide caiyun key")
     elif options.model == "deepl":
         API_KEY = options.deepl_key or env.get("BBM_DEEPL_API_KEY")
         if not API_KEY:
-            raise Exception("Please provid deepl key")
+            raise Exception("Please provide deepl key")
     elif options.model == "claude":
         API_KEY = options.claude_key or env.get("BBM_CLAUDE_API_KEY")
         if not API_KEY:
-            raise Exception("Please provid claude key")
+            raise Exception("Please provide claude key")
     else:
         API_KEY = ""
 
diff --git a/book_maker/translator/chatgptapi_translator.py b/book_maker/translator/chatgptapi_translator.py
index 62ea694..d23046e 100644
--- a/book_maker/translator/chatgptapi_translator.py
+++ b/book_maker/translator/chatgptapi_translator.py
@@ -41,7 +41,7 @@ class ChatGPTAPI(Base):
             prompt_sys_msg
             or environ.get(
                 "OPENAI_API_SYS_MSG",
-            )  # XXX: for backward compatability, deprecate soon
+            )  # XXX: for backward compatibility, deprecate soon
             or environ.get(PROMPT_ENV_MAP["system"])
             or ""
         )
diff --git a/book_maker/translator/gpt4_translator.py b/book_maker/translator/gpt4_translator.py
index b648b6e..d3daeeb 100644
--- a/book_maker/translator/gpt4_translator.py
+++ b/book_maker/translator/gpt4_translator.py
@@ -44,7 +44,7 @@ class GPT4(Base):
             prompt_sys_msg
             or environ.get(
                 "OPENAI_API_SYS_MSG",
-            )  # XXX: for backward compatability, deprecate soon
+            )  # XXX: for backward compatibility, deprecate soon
             or environ.get(PROMPT_ENV_MAP["system"])
             or ""
         )
diff --git a/docs/book_source.md b/docs/book_source.md
index c1afb74..1d9776c 100644
--- a/docs/book_source.md
+++ b/docs/book_source.md
@@ -6,7 +6,7 @@ Txt files and srt files are plain text files. This program can translate plain t
     python3 make_book.py --book_name test_books/the_little_prince.txt --test --language zh-hans
 
 ## epub
-epub is made of html files. By default, we only translate contents in `<p>`. Use `--translate-tags` to specify tags need for translation. Use comma to seperate multiple tags. For example: `--translate-tags h1,h2,h3,p,div`
+epub is made of html files. By default, we only translate contents in `<p>`. Use `--translate-tags` to specify tags need for translation. Use comma to separate multiple tags. For example: `--translate-tags h1,h2,h3,p,div`
 
     bbook_maker --book_name test_books/animal_farm.epub --openai_key ${openai_key} --translate-tags div,p
 
@@ -17,4 +17,4 @@ If you want to translate strings in an e-book that aren't labeled with any tags,
 Use `--book_from` option to specify e-reader type (Now only `kobo` is available), and use `--device_path` to specify the mounting point.
 
     # Translate books download from Rakuten Kobo on kobo e-reader
-    bbook_maker --book_from kobo --device_path /tmp/kobo
\ No newline at end of file
+    bbook_maker --book_from kobo --device_path /tmp/kobo
diff --git a/docs/prompt.md b/docs/prompt.md
index b616601..1b2b37c 100644
--- a/docs/prompt.md
+++ b/docs/prompt.md
@@ -1,4 +1,5 @@
-# Tweek the prompt
+# Tweak the prompt
+
 To tweak the prompt, use the `--prompt` parameter. Valid placeholders for the `user` role template include `{text}` and `{language}`. It supports a few ways to configure the prompt:
 
 - If you don't need to set the `system` role content, you can simply set it up like this: `--prompt "Translate {text} to {language}."` or `--prompt prompt_template_sample.txt`
@@ -25,4 +26,4 @@ python3 make_book.py --book_name test_books/animal_farm.epub --prompt prompt_tem
 python3 make_book.py --book_name test_books/animal_farm.epub --prompt prompt_template_sample.json
 # or
 python3 make_book.py --book_name test_books/animal_farm.epub --prompt "Please translate \`{text}\` to {language}"
-```
\ No newline at end of file
+```
diff --git a/mkdocs.yml b/mkdocs.yml
index b379f04..2cfd92d 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -16,6 +16,6 @@ nav:
     - Command line options: cmd.md
     - Translate from different source: book_source.md
     - Environment setting: env_settings.md
-    - Tweek the prompt: prompt.md
+    - Tweak the prompt: prompt.md
   - Disclaimer: disclaimer.md
     
\ No newline at end of file
diff --git a/tests/test_integration.py b/tests/test_integration.py
index ff3a064..03664b5 100644
--- a/tests/test_integration.py
+++ b/tests/test_integration.py
@@ -128,7 +128,7 @@ def test_google_translate_txt_batch_size(test_book_dir, tmpdir):
     reason="No BBM_CAIYUN_API_KEY in environment variable.",
 )
 def test_caiyun_translate_txt(test_book_dir, tmpdir):
-    """Test caiyun tranlate txt"""
+    """Test caiyun translate txt"""
     shutil.copyfile(
         os.path.join(test_book_dir, "the_little_prince.txt"),
         os.path.join(tmpdir, "the_little_prince.txt"),
diff --git a/typos.toml b/typos.toml
new file mode 100644
index 0000000..c506f57
--- /dev/null
+++ b/typos.toml
@@ -0,0 +1,8 @@
+# See https://github.com/crate-ci/typos/blob/master/docs/reference.md to configure typos
+[default.extend-words]
+sur = "sur"
+banch = "banch" # TODO: not sure if this is a typo or not
+fo = "fo"
+ba = "ba"
+[files]
+extend-exclude = ["LICENSE"]