diff --git a/debian/control b/debian/control
index 071ade8f..31779d78 100644
--- a/debian/control
+++ b/debian/control
@@ -11,7 +11,6 @@ Architecture: all
 Depends: ${misc:Depends}, ${python:Depends},
     python-django (>= 1.8),
     python-gadjo,
-    python-intervaltree,
     python-requests
 Recommends: python-django-mellon
 Description: Agendas System (Python module)
diff --git a/requirements.txt b/requirements.txt
index ed6f4ce7..75fc6d78 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,5 @@ django>=1.8, <1.9
 gadjo
 djangorestframework>=3.1, <3.7
 django-jsonfield >= 0.9.3
-intervaltree
 requests
 vobject
diff --git a/setup.py b/setup.py
index c8d2de4d..46157e59 100644
--- a/setup.py
+++ b/setup.py
@@ -139,7 +139,6 @@ setup(
         'gadjo',
         'djangorestframework>=3.1, <3.7',
         'django-jsonfield >= 0.9.3',
-        'intervaltree',
         'vobject',
         'requests'
         ],
diff --git a/tests/test_interval.py b/tests/test_interval.py
index 5eb37934..c8c6953a 100644
--- a/tests/test_interval.py
+++ b/tests/test_interval.py
@@ -1,10 +1,5 @@
 import pytest
 
-try:
-    from intervaltree import IntervalTree
-except ImportError:
-    IntervalTree = None
-
 from chrono.interval import Interval, Intervals
 
 
diff --git a/tox.ini b/tox.ini
index c484c580..25f7aff2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,7 +15,6 @@ deps =
   django111: django>=1.11,<1.12
   pytest-cov
   pytest-django
-  intervaltree
   pytest>=3.3.0
   WebTest
   mock