diff --git a/readthedocs/projects/migrations/0042_increase_env_variable_value_max_length.py b/readthedocs/projects/migrations/0042_increase_env_variable_value_max_length.py
new file mode 100644
index 00000000000..698c0f8d7ec
--- /dev/null
+++ b/readthedocs/projects/migrations/0042_increase_env_variable_value_max_length.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.20 on 2019-04-16 18:43
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('projects', '0041_index-repo-field'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='environmentvariable',
+            name='value',
+            field=models.CharField(help_text='Value of the environment variable', max_length=2048),
+        ),
+    ]
diff --git a/readthedocs/projects/models.py b/readthedocs/projects/models.py
index aa732170e86..bef576c794d 100644
--- a/readthedocs/projects/models.py
+++ b/readthedocs/projects/models.py
@@ -1429,7 +1429,7 @@ class EnvironmentVariable(TimeStampedModel, models.Model):
         help_text=_('Name of the environment variable'),
     )
     value = models.CharField(
-        max_length=256,
+        max_length=2048,
         help_text=_('Value of the environment variable'),
     )
     project = models.ForeignKey(