diff --git a/requirements.txt b/requirements.txt
index 2e5dbe4..a810fe1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ asn1crypto==0.24.0        # via cryptography
 backports.lzma==0.0.10 ; python_version < "3.3"
 cffi==1.11.4              # via cryptography
 click==6.7
-construct==2.8.22
+construct==2.9.27
 cryptography==2.1.4
 enum34==1.1.6             # via cryptography
 idna==2.6                 # via cryptography
diff --git a/test-requirements.txt b/test-requirements.txt
index bc0e1c2..baabd42 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,12 +9,12 @@ attrs==17.4.0             # via hypothesis, pytest
 backports.lzma==0.0.10 ; python_version < "3.3"
 cffi==1.11.4
 click==6.7
-construct==2.8.22
-coverage==4.4.2           # via hypothesis, pytest-cov
+construct==2.9.27
+coverage==4.5             # via hypothesis, pytest-cov
 cryptography==2.1.4
 enum34==1.1.6
 funcsigs==1.0.2           # via mock, pytest
-hypothesis==3.44.16
+hypothesis==3.44.26
 idna==2.6
 ipaddress==1.0.19
 mock==2.0.0
@@ -24,5 +24,5 @@ py==1.5.2                 # via pytest
 pycparser==2.18
 pytest-cov==2.5.1
 pytest-travis-fold==1.3.0
-pytest==3.3.2
+pytest==3.4.0
 six==1.11.0