diff --git a/.gitignore b/.gitignore
index a68e8ca..882d793 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ pip-log.txt
 wordfreq-data.tar.gz
 .idea
 build.dot
+.pytest_cache
diff --git a/README.md b/README.md
index 7fae7b9..1c2487a 100644
--- a/README.md
+++ b/README.md
@@ -395,7 +395,7 @@ things need to be installed:
 To install these three things on Ubuntu, you can run:
 
 ```sh
-sudo apt-get install libmecab-dev mecab-ipadic-utf8
+sudo apt-get install python3-dev libmecab-dev mecab-ipadic-utf8
 pip3 install mecab-python3
 ```
 
@@ -419,6 +419,7 @@ wget https://bitbucket.org/eunjeon/mecab-ko-dic/downloads/mecab-ko-dic-2.0.1-201
 tar xvf mecab-ko-dic-2.0.1-20150920.tar.gz
 cd mecab-ko-dic-2.0.1-20150920
 ./autogen.sh
+./configure
 make
 sudo make install
 ```
diff --git a/wordfreq/mecab.py b/wordfreq/mecab.py
index aca75d2..8607387 100644
--- a/wordfreq/mecab.py
+++ b/wordfreq/mecab.py
@@ -20,6 +20,7 @@ def find_mecab_dictionary(names):
         '/var/local/lib/mecab/dic',
         '/usr/lib/mecab/dic',
         '/usr/local/lib/mecab/dic',
+        '/usr/lib/x86_64-linux-gnu/mecab/dic',
     ]
     full_paths = [os.path.join(path, name) for path in paths for name in names]
     checked_paths = [path for path in full_paths if len(path) <= MAX_PATH_LENGTH]