diff --git a/wordfreq/build.py b/wordfreq/build.py
index 778b2dc..d570117 100644
--- a/wordfreq/build.py
+++ b/wordfreq/build.py
@@ -189,6 +189,14 @@ def load_all_data(source_dir=None, filename=None, do_it_anyway=False):
     )
     save_wordlist_to_db(conn, 'twitter', 'xx', twitter_wordlist)
 
+    logger.info("Loading stemmed Twitter corpus.")
+    twitter_stems_wordlist = read_multilingual_csv(
+        os.path.join(source_dir, 'luminoso', 'twitter-stems-2014.csv')
+    )
+    for lang in twitter_stems_wordlist:
+        logger.info("\tLanguage: %s" % lang)
+        save_wordlist_to_db(conn, 'twitter-stems', lang, twitter_stems_wordlist[lang])
+
     logger.info("Done loading.")
 
 
diff --git a/wordfreq/config.py b/wordfreq/config.py
index 3c780aa..558acf3 100644
--- a/wordfreq/config.py
+++ b/wordfreq/config.py
@@ -5,7 +5,7 @@ DB_DIR = (os.environ.get('WORDFREQ_DATA')
           or os.path.expanduser('~/.cache/wordfreq'))
 
 # When the minor version number increments, the data may change.
-VERSION = '0.4.1'
+VERSION = '0.5.0'
 MINOR_VERSION = '.'.join(VERSION.split('.')[:2])
 
 # Put these options together to make a database filename.
diff --git a/wordfreq_data/luminoso/twitter-stems-2014.csv.REMOVED.git-id b/wordfreq_data/luminoso/twitter-stems-2014.csv.REMOVED.git-id
new file mode 100644
index 0000000..24306da
--- /dev/null
+++ b/wordfreq_data/luminoso/twitter-stems-2014.csv.REMOVED.git-id
@@ -0,0 +1 @@
+3710e65f27753facc699fe56269c9631d5ba6aba
\ No newline at end of file