diff --git a/requirements_dev.txt b/requirements_dev.txt
index aa93dba34..83282d4e0 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -124,10 +124,6 @@ imagesize==1.2.0 \
     --hash=sha256:6965f19a6a2039c7d48bca7dba2473069ff854c36ae6f19d2cde309d998228a1 \
     --hash=sha256:b1f6b5a4eab1f73479a50fb79fcf729514a900c341d8503d62a62dbc4127a2b1 \
     # via sphinx
-importlib-metadata==1.3.0 \
-    --hash=sha256:073a852570f92da5f744a3472af1b61e28e9f78ccf0c9117658dc32b15de7b45 \
-    --hash=sha256:d95141fbfa7ef2ec65cfd945e2af7e5a6ddbd7c8d9a25e66ff3be8e3daf9f60f \
-    # via -c requirements.txt, pluggy, pytest
 jinja2==2.10.3 \
     --hash=sha256:74320bb91f31270f9551d46522e33af46a80c3d619f4a4bf42b3164d30b5911f \
     --hash=sha256:9fe95f19286cfefaa917656583d020be14e7859c6b0252588391e47db34527de \
@@ -356,9 +352,9 @@ urllib3==1.24.3 \
     --hash=sha256:2393a695cd12afedd0dcb26fe5d50d0cf248e5a66f75dbd89a3d4eb333a61af4 \
     --hash=sha256:a637e5fae88995b256e3409dc4d52c2e2e0ba32c42a6365fee8bbd2238de3cfb \
     # via -c requirements.txt, pytest-splinter, requests, selenium
-waitress==1.4.2 \
-    --hash=sha256:67a60a376f0eb335ed88967c42b73983a58d66a2a72eb9009a42725f7453b142 \
-    --hash=sha256:cbf1c62fc41393a6f27cb78483f8f6e252630a3598984668244b7bf4e35856f1 \
+waitress==1.4.3 \
+    --hash=sha256:045b3efc3d97c93362173ab1dfc159b52cfa22b46c3334ffc805dbdbf0e4309e \
+    --hash=sha256:77ff3f3226931a1d7d8624c5371de07c8e90c7e5d80c5cc660d72659aaf23f38 \
     # via webtest
 wcwidth==0.1.8 \
     --hash=sha256:8fd29383f539be45b20bd4df0dc29c20ba48654a41e661925e612311e9f3c603 \
@@ -376,10 +372,6 @@ werkzeug==0.16.0 \
     --hash=sha256:7280924747b5733b246fe23972186c6b348f9ae29724135a6dfc1e53cea433e7 \
     --hash=sha256:e5f4a1f98b52b18a93da705a7458e55afb26f32bff83ff5d19189f92462d65c4 \
     # via pytest-localserver
-zipp==0.6.0 \
-    --hash=sha256:3718b1cbcd963c7d4c5511a8240812904164b7f381b647143a89d3b98f9bcd8e \
-    --hash=sha256:f06903e9f1f43b12d371004b4ac7b06ab39a44adc747266928ae6debfa7b3335 \
-    # via -c requirements.txt, importlib-metadata
 
 # WARNING: The following packages were not pinned, but pip requires them to be
 # pinned when the requirements file includes hashes. Consider using the --allow-unsafe flag.