diff --git a/Pipfile b/Pipfile
index a6a4b07..f95af42 100644
--- a/Pipfile
+++ b/Pipfile
@@ -12,9 +12,9 @@ flake8 = "*"
 pandas = "*"
 python-stdnum = "*"
 xlrd = "*"
-iso-639 = "*"
 requests = "*"
 requests-cache = "*"
+pycountry = "*"
 
 [requires]
 python_version = "3.7"
diff --git a/Pipfile.lock b/Pipfile.lock
index edb8cf4..936a0f0 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "c5c86b4dae011bcbf6705514d97aa55e0a59dd8b7927c38e34103d77eca13cc7"
+            "sha256": "1c4130ed98fb55545244ba2926f2b4246dc86af7545cb892a45311426f934cae"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -37,13 +37,6 @@
             ],
             "version": "==2.8"
         },
-        "iso-639": {
-            "hashes": [
-                "sha256:dc9cd4b880b898d774c47fe9775167404af8a85dd889d58f9008035109acce49"
-            ],
-            "index": "pypi",
-            "version": "==0.4.5"
-        },
         "numpy": {
             "hashes": [
                 "sha256:03e311b0a4c9f5755da7d52161280c6a78406c7be5c5cc7facfbcebb641efb7e",
@@ -85,6 +78,13 @@
             "index": "pypi",
             "version": "==0.25.0"
         },
+        "pycountry": {
+            "hashes": [
+                "sha256:68e58bfd3bedeea49ba9d4b38f2bd5e042f9753628eba9a819fb03f551d89096"
+            ],
+            "index": "pypi",
+            "version": "==19.7.15"
+        },
         "python-dateutil": {
             "hashes": [
                 "sha256:7e6584c74aeed623791615e26efd690f29817a27c73085b78e4bad02493df2fb",
@@ -235,10 +235,10 @@
         },
         "packaging": {
             "hashes": [
-                "sha256:0c98a5d0be38ed775798ece1b9727178c4469d9c3b4ada66e8e6b7849f8732af",
-                "sha256:9e1cbf8c12b1f1ce0bb5344b8d7ecf66a6f8a6e91bcb0c84593ed6d3ab5c4ab3"
+                "sha256:a7ac867b97fdc07ee80a8058fe4435ccd274ecc3b0ed61d852d7d53055528cf9",
+                "sha256:c491ca87294da7cc01902edbe30a5bc6c4c28172b5138ab4e4aa1b9d7bfaeafe"
             ],
-            "version": "==19.0"
+            "version": "==19.1"
         },
         "parso": {
             "hashes": [
@@ -314,10 +314,10 @@
         },
         "pyparsing": {
             "hashes": [
-                "sha256:43c5486cefefa536c9aab528881c992328f020eefe4f6d06332449c365218580",
-                "sha256:d6c5ffe9d0305b9b977f7a642d36b9370954d1da7ada4c62393382cbadad4265"
+                "sha256:6f98a7b9397e206d78cc01df10131398f1c8b8510a2f4d97d9abd82e1aacdd80",
+                "sha256:d9338df12903bbf5d65a0e4e87c2161968b10d2e489652bb47001d82a9b028b4"
             ],
-            "version": "==2.4.1.1"
+            "version": "==2.4.2"
         },
         "pytest": {
             "hashes": [
diff --git a/csv_metadata_quality/check.py b/csv_metadata_quality/check.py
index 7be9f25..899bf84 100755
--- a/csv_metadata_quality/check.py
+++ b/csv_metadata_quality/check.py
@@ -157,7 +157,7 @@ def language(field):
     Prints the value if it is invalid.
     """
 
-    from iso639 import languages
+    from pycountry import languages
 
     # Skip fields with missing values
     if pd.isna(field):
@@ -169,19 +169,14 @@ def language(field):
     for value in field.split('||'):
 
         # After splitting, check if language value is 2 or 3 characters so we
-        # can check it against ISO 639-2 or ISO 639-3 accordingly. In iso-639
-        # library ISO 639-2 is "part1" and ISO 639-3 is "part3".
+        # can check it against ISO 639-2 or ISO 639-3 accordingly.
         if len(value) == 2:
-            try:
-                languages.get(part1=value)
-            except KeyError:
+            if not languages.get(alpha_2=value):
                 print(f'Invalid ISO 639-2 language: {value}')
 
                 pass
         elif len(value) == 3:
-            try:
-                languages.get(part3=value)
-            except KeyError:
+            if not languages.get(alpha_3=value):
                 print(f'Invalid ISO 639-3 language: {value}')
 
                 pass