diff --git a/environment.yml b/environment.yml
index d670027e5..4365812eb 100644
--- a/environment.yml
+++ b/environment.yml
@@ -8,7 +8,7 @@ dependencies:
   - IPython=6.1.0
   - astropy=3
   - astroquery>=0.3.7
-  - matplotlib=2.0.2
+  - matplotlib==3.0.2
   - numpy=1.14
   - scipy=1.0 # needed for coordinates cross-matching
   - jupyter=1.0
diff --git a/pip-requirements.txt b/pip-requirements.txt
index 92dd3e02a..bc880c041 100644
--- a/pip-requirements.txt
+++ b/pip-requirements.txt
@@ -1,7 +1,7 @@
 IPython>=6.1
 astropy>=3
 astroquery>=0.3.7
-matplotlib>=2.0
+matplotlib==3.0.2
 numpy>=1.15
 jupyter>=1.0
 scipy>=1.0
diff --git a/tutorials/notebooks/quantities/requirements.txt b/tutorials/notebooks/quantities/requirements.txt
index 2e5ff00fc..8feb54034 100644
--- a/tutorials/notebooks/quantities/requirements.txt
+++ b/tutorials/notebooks/quantities/requirements.txt
@@ -1,3 +1,3 @@
 numpy
-matplotlib
+matplotlib==3.0.2
 astropy