diff --git a/Pipfile.lock b/Pipfile.lock
index ad93836..1389be2 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -49,11 +49,11 @@
         },
         "pygments": {
             "hashes": [
-                "sha256:647344a061c249a3b74e230c739f434d7ea4d8b1d5f3721bc0f3558049b38f44",
-                "sha256:ff7a40b4860b727ab48fad6360eb351cc1b33cbf9b15a0f689ca5353e9463324"
+                "sha256:bc9591213a8f0e0ca1a5e68a479b4887fdc3e75d0774e5c71c31920c427de435",
+                "sha256:df49d09b498e83c1a73128295860250b0b7edd4c723a32e9bc0d295c7c2ec337"
             ],
             "index": "pypi",
-            "version": "==2.6.1"
+            "version": "==2.7.4"
         },
         "pyyaml": {
             "hashes": [
diff --git a/requirements.txt b/requirements.txt
index 0896866..fbb2ab5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,10 @@
+-i https://pypi.org/simple/
 click==7.1.1
 colorama==0.4.3
 dinterpol==0.3.4
 enclosed==0.0.2
-Pygments==2.6.1
-PyYAML==5.3
+pygments==2.7.4
+pyyaml==5.3
 terminaltables==3.1.0
 wasabi==0.6.0
 xmltodict==0.12.0