diff --git a/requirements.txt b/requirements.txt
index 6ce99ed..ed042f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
-astropy==3.1.1
-matplotlib==3.0.2
-numpy==1.15.4
+astropy==3.1.2
+matplotlib==3.0.3
+numpy==1.16.2
 pyastronomy==0.13.0
-scipy==1.2.0
+scipy==1.2.1
diff --git a/requirements_dev.txt b/requirements_dev.txt
index dec2e1d..5f51c08 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,7 +1,7 @@
 codacy-coverage==1.3.11
 codeclimate-test-reporter==0.2.3
-hypothesis==3.85.2
-pre-commit==1.13.0
-pytest==4.0.2
-pytest-cov==2.6.0
+hypothesis==4.7.17
+pre-commit==1.14.4
+pytest==4.3.0
+pytest-cov==2.6.1
 python-coveralls==2.9.1