diff --git a/environment-dev.yml b/environment-dev.yml
index aacffa1776..0664964915 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -5,7 +5,7 @@ channels:
 dependencies:
   - python=3.6
   - arviz>=0.9
-  - theano>=1.0.4
+  - theano>=1.0.5
   - numpy>=1.13
   - scipy>=0.18
   - pandas >=0.18
diff --git a/requirements.txt b/requirements.txt
index 15c2df01e4..c65a007ef1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 arviz>=0.9.0
-theano>=1.0.4
+theano>=1.0.5
 numpy>=1.13.0
 scipy>=0.18.1
 pandas>=0.18.0