diff --git a/Pipfile b/Pipfile
index 8e20b8db..a112af52 100644
--- a/Pipfile
+++ b/Pipfile
@@ -12,15 +12,15 @@ pydocstyle = "==2.1.1"
 pylint = "==2.1.1"
 mypy-lang = "==0.5.0"
 coverage = "==4.5.1"
-pytest = "==3.7.4"
+pytest = "==3.8.1"
 pytest-pylint = "==0.12.3"
 pytest-mypy = "==0.3.2"
-pytest-cov = "==2.5.1"
+pytest-cov = "==2.6.0"
 pytest-runner = "==4.2"
-coveralls = "==1.5.0"
+coveralls = "==1.5.1"
 
 
 [dev-packages]
 
-sphinx = "==1.7.8"
+sphinx = "==1.8.1"
 ghp-import = "==0.5.5"
diff --git a/Pipfile.lock b/Pipfile.lock
index 1150ade1..560ae50d 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -91,10 +91,10 @@
         },
         "coveralls": {
             "hashes": [
-                "sha256:aec5a1f5e34224b9089664a1b62217732381c7de361b6ed1b3c394d7187b352a",
-                "sha256:9dee67e78ec17b36c52b778247762851c8e19a893c9a14e921a2fc37f05fac22"
+                "sha256:b2388747e2529fa4c669fb1e3e2756e4e07b6ee56c7d9fce05f35ccccc913aa0",
+                "sha256:ab638e88d38916a6cedbf80a9cd8992d5fa55c77ab755e262e00b36792b7cd6d"
             ],
-            "version": "==1.5.0"
+            "version": "==1.5.1"
         },
         "cython": {
             "hashes": [
@@ -193,10 +193,10 @@
         },
         "mypy": {
             "hashes": [
-                "sha256:673ea75fb750289b7d1da1331c125dc62fc1c3a8db9129bb372ae7b7d5bf300a",
-                "sha256:c770605a579fdd4a014e9f0a34b6c7a36ce69b08100ff728e96e27445cef3b3c"
+                "sha256:00b95bfdc0d5b9aa53c906e56fb91937743f2121d66684db5f947ec5d75f565d",
+                "sha256:6704586b4c2bf7dfa5e87a422be9ca57db622bab65008245759f3d4baeb219dd"
             ],
-            "version": "==0.620"
+            "version": "==0.630"
         },
         "mypy-lang": {
             "hashes": [
@@ -242,17 +242,17 @@
         },
         "pytest": {
             "hashes": [
-                "sha256:ad0c7db7b5d4081631e0155f5c61b80ad76ce148551aaafe3a718d65a7508b18",
-                "sha256:2d7c49e931316cc7d1638a3e5f54f5d7b4e5225972b3c9838f3584788d27f349"
+                "sha256:0a72d8a9f559c006ba153e0c9b4838efd7b656cf1f993747ba7128770d6eb12c",
+                "sha256:95529588ff4e85114a0b0ad8e9cf0131ca47d46b28230e25366c5aba66b1d854"
             ],
-            "version": "==3.7.4"
+            "version": "==3.8.1"
         },
         "pytest-cov": {
             "hashes": [
-                "sha256:890fe5565400902b0c78b5357004aab1c814115894f4f21370e2433256a3eeec",
-                "sha256:03aa752cf11db41d281ea1d807d954c4eda35cfa1b21d6971966cc041bbf6e2d"
+                "sha256:513c425e931a0344944f84ea47f3956be0e416d95acbd897a44970c8d926d5d7",
+                "sha256:e360f048b7dae3f2f2a9a4d067b2dd6b6a015d384d1577c994a43f3f7cbad762"
             ],
-            "version": "==2.5.1"
+            "version": "==2.6.0"
         },
         "pytest-mypy": {
             "hashes": [
@@ -441,10 +441,10 @@
         },
         "sphinx": {
             "hashes": [
-                "sha256:d719de667218d763e8fd144b7fcfeefd8d434a6201f76bf9f0f0c1fa6f47fcdb",
-                "sha256:a07050845cc9a2f4026a6035cc8ed795a5ce7be6528bbc82032385c10807dfe7"
+                "sha256:d222626d8356de702431e813a05c68a35967e3d66c6cd1c2c89539bb179a7464",
+                "sha256:652eb8c566f18823a022bb4b6dbc868d366df332a11a0226b5bc3a798a479f17"
             ],
-            "version": "==1.7.8"
+            "version": "==1.8.1"
         },
         "sphinxcontrib-websupport": {
             "hashes": [
diff --git a/requirements-docs.txt b/requirements-docs.txt
index 6b94d118..93085789 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -1,2 +1,2 @@
-sphinx==1.7.8
+sphinx==1.8.1
 ghp-import==0.5.5
diff --git a/requirements.txt b/requirements.txt
index 890a65f0..670e78dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,11 +13,11 @@ mypy-lang==0.5.0
 coverage==4.5.1
 
 # Testing
-pytest==3.7.4
+pytest==3.8.1
 # pytest-flake8==0.8.1  # pytest plugin of flake8
 pytest-pylint==0.12.3    # pytest plugin of pylint
 pytest-mypy==0.3.2      # pytest plugin of mypy
-pytest-cov==2.5.1       # testing coverage
+pytest-cov==2.6.0       # testing coverage
 pytest-runner==4.2   # add setup.py test support for pytest
 
-coveralls==1.5.0
+coveralls==1.5.1