diff --git a/requirements.txt b/requirements.txt
index e9645d8..fa1e455 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,21 +4,53 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-arrow==0.13.0
+arrow==0.15.1
+    # via -r requirements_function.txt
 awscli==1.16.88
+    # via -r requirements.in
 boto3==1.9.78
-botocore==1.12.78         # via awscli, boto3, s3transfer
-colorama==0.3.9           # via awscli
-docutils==0.14            # via awscli, botocore
+    # via -r requirements.in
+botocore==1.12.78
+    # via
+    #   awscli
+    #   boto3
+    #   s3transfer
+colorama==0.3.9
+    # via awscli
+docutils==0.14
+    # via
+    #   awscli
+    #   botocore
 invoke==1.2.0
+    # via -r requirements.in
 jinja2==2.10
-jmespath==0.9.3           # via boto3, botocore
-markupsafe==1.1.0         # via jinja2
-pyasn1==0.4.5             # via rsa
+    # via -r requirements.in
+jmespath==0.9.3
+    # via
+    #   boto3
+    #   botocore
+markupsafe==1.1.0
+    # via jinja2
+pyasn1==0.4.5
+    # via rsa
 python-dateutil==2.7.5
+    # via
+    #   -r requirements_function.txt
+    #   arrow
+    #   botocore
 python-dotenv==0.10.1
-pyyaml==3.13              # via awscli
-rsa==3.4.2                # via awscli
-s3transfer==0.1.13        # via awscli, boto3
+    # via -r requirements.in
+pyyaml==3.13
+    # via awscli
+rsa==3.4.2
+    # via awscli
+s3transfer==0.1.13
+    # via
+    #   awscli
+    #   boto3
 six==1.12.0
-urllib3==1.24.1           # via botocore
+    # via
+    #   -r requirements_function.txt
+    #   python-dateutil
+urllib3==1.24.1
+    # via botocore
diff --git a/requirements_function.txt b/requirements_function.txt
index eef20f6..fe9e63b 100644
--- a/requirements_function.txt
+++ b/requirements_function.txt
@@ -4,6 +4,9 @@
 #
 #    pip-compile --output-file requirements_function.txt requirements_function.in
 #
-arrow==0.13.0
-python-dateutil==2.7.5    # via arrow
-six==1.12.0               # via python-dateutil
+arrow==0.15.1
+    # via -r requirements_function.in
+python-dateutil==2.7.5
+    # via arrow
+six==1.12.0
+    # via python-dateutil