diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..2bbe472
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,5 @@
+test:
+  script:
+  - apt-get update -qy
+  - apt-get install -qy --no-install-recommends python3-mutagen python3-gi-cairo gir1.2-poppler-0.18 gir1.2-gdkpixbuf-2.0 libimage-exiftool-perl
+  - python3 -m unittest discover -v
diff --git a/src/parsers/jpg.py b/src/parsers/jpg.py
index d1a4439..34fc04c 100644
--- a/src/parsers/jpg.py
+++ b/src/parsers/jpg.py
@@ -19,7 +19,7 @@ class JPGParser(abstract.AbstractParser):
 
     def get_meta(self):
         out = subprocess.check_output(['exiftool', '-json', self.filename])
-        meta = json.loads(out)[0]
+        meta = json.loads(out.decode('utf-8'))[0]
         for key in self.meta_whitelist:
             meta.pop(key, None)
         return meta
diff --git a/src/parsers/png.py b/src/parsers/png.py
index 20cd234..377682e 100644
--- a/src/parsers/png.py
+++ b/src/parsers/png.py
@@ -16,7 +16,7 @@ class PNGParser(abstract.AbstractParser):
 
     def get_meta(self):
         out = subprocess.check_output(['exiftool', '-json', self.filename])
-        meta = json.loads(out)[0]
+        meta = json.loads(out.decode('utf-8'))[0]
         for key in self.meta_whitelist:
             meta.pop(key, None)
         return meta