diff --git a/Pipfile b/Pipfile
index 762e4c5f..36f059ea 100644
--- a/Pipfile
+++ b/Pipfile
@@ -54,6 +54,7 @@ pandas_ods_reader = "*"
 pdftotext = "*"
 lxml = "*"
 xlrd = "*"
+idna-ssl = {markers="python_version < '3.7'"}
 
 [requires]
 python_version = "3"
diff --git a/Pipfile.lock b/Pipfile.lock
index 6ac64939..fa07b4cb 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "1d4c69ced012268e1ab20cee76f76652e1acd9f5133636551d5686f15748d3b4"
+            "sha256": "9aac0a9c45df16b9502c13f9468095cf5ffdb8bc407fe2b55faee3ff53d8eba3"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -177,6 +177,14 @@
             ],
             "version": "==2.8"
         },
+        "idna-ssl": {
+            "hashes": [
+                "sha256:a933e3bb13da54383f9e8f35dc4f9cb9eb9b3b78c6b36f311254d6d0d92c6c7c"
+            ],
+            "index": "pypi",
+            "markers": "python_version < '3.7'",
+            "version": "==1.1.0"
+        },
         "isodate": {
             "hashes": [
                 "sha256:2e364a3d5759479cdb2d37cce6b9376ea504db2ff90252a2e5b7cc89cc9ff2d8",