diff --git a/contrib/packaging/requirements-windows-py3.txt b/contrib/packaging/requirements-windows-py3.txt
--- a/contrib/packaging/requirements-windows-py3.txt
+++ b/contrib/packaging/requirements-windows-py3.txt
@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with python 3.7
 # To update, run:
 #
-#    pip-compile --generate-hashes --output-file=contrib/packaging/requirements-windows-py3.txt contrib/packaging/requirements-windows.txt.in
+#    pip-compile --generate-hashes --no-reuse-hashes --output-file=contrib/packaging/requirements-windows-py3.txt contrib/packaging/requirements-windows.txt.in
 #
 atomicwrites==1.4.0 \
     --hash=sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197 \
@@ -110,7 +110,8 @@ dulwich==0.20.46 \
     --hash=sha256:f9552ac246bceab1c5cdd1ec3cfe9446fe76b9853eaf59d3244df03eb27fd3fe
     # via -r contrib/packaging/requirements-windows.txt.in
 fuzzywuzzy==0.18.0 \
-    --hash=sha256:45016e92264780e58972dca1b3d939ac864b78437422beecebb3095f8efd00e8
+    --hash=sha256:45016e92264780e58972dca1b3d939ac864b78437422beecebb3095f8efd00e8 \
+    --hash=sha256:928244b28db720d1e0ee7587acf660ea49d7e4c632569cad4f1cd7e68a5f0993
     # via -r contrib/packaging/requirements-windows.txt.in
 idna==3.2 \
     --hash=sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a \
@@ -222,7 +223,8 @@ pytest==6.2.4 \
     --hash=sha256:91ef2131a9bd6be8f76f1f08eac5c5317221d6ad1e143ae03894b862e8976890
     # via pytest-vcr
 pytest-vcr==1.0.2 \
-    --hash=sha256:23ee51b75abbcc43d926272773aae4f39f93aceb75ed56852d0bf618f92e1896
+    --hash=sha256:23ee51b75abbcc43d926272773aae4f39f93aceb75ed56852d0bf618f92e1896 \
+    --hash=sha256:2f316e0539399bea0296e8b8401145c62b6f85e9066af7e57b6151481b0d6d9c
     # via -r contrib/packaging/requirements-windows.txt.in
 pywin32-ctypes==0.2.0 \
     --hash=sha256:24ffc3b341d457d48e8922352130cf2644024a4ff09762a2261fd34c36ee5942 \
diff --git a/contrib/packaging/requirements-windows.txt.in b/contrib/packaging/requirements-windows.txt.in
--- a/contrib/packaging/requirements-windows.txt.in
+++ b/contrib/packaging/requirements-windows.txt.in
@@ -1,3 +1,9 @@
+# Declare Windows-specific requirements for generating
+# the compiled (frozen) set of requirements in
+# ./requirements-windows-py3.txt.
+# If run on Windows, it may be necessary to run dos2unix
+# on the output file to replace any CRLF newlines with LF.
+
 docutils
 dulwich
 
diff --git a/contrib/packaging/requirements.txt b/contrib/packaging/requirements.txt
--- a/contrib/packaging/requirements.txt
+++ b/contrib/packaging/requirements.txt
@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with python 3.7
 # To update, run:
 #
-#    pip-compile --generate-hashes --output-file=contrib/packaging/requirements.txt contrib/packaging/requirements.txt.in
+#    pip-compile --generate-hashes --no-reuse-hashes --output-file=contrib/packaging/requirements.txt contrib/packaging/requirements.txt.in
 #
 docutils==0.16 \
     --hash=sha256:0c5b78adfbf7762415433f5515cd5c9e762339e23369dbe8000d84a4bf4ab3af \
@@ -18,8 +18,12 @@ markupsafe==1.1.1 \
     --hash=sha256:09c4b7f37d6c648cb13f9230d847adf22f8171b1ccc4d5682398e77f40309235 \
     --hash=sha256:1027c282dad077d0bae18be6794e6b6b8c91d58ed8a8d89a89d59693b9131db5 \
     --hash=sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42 \
+    --hash=sha256:195d7d2c4fbb0ee8139a6cf67194f3973a6b3042d742ebe0a9ed36d8b6f0c07f \
+    --hash=sha256:22c178a091fc6630d0d045bdb5992d2dfe14e3259760e713c490da5323866c39 \
     --hash=sha256:24982cc2533820871eba85ba648cd53d8623687ff11cbb805be4ff7b4c971aff \
     --hash=sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b \
+    --hash=sha256:2beec1e0de6924ea551859edb9e7679da6e4870d32cb766240ce17e0a0ba2014 \
+    --hash=sha256:3b8a6499709d29c2e2399569d96719a1b21dcd94410a586a18526b143ec8470f \
     --hash=sha256:43a55c2930bbc139570ac2452adf3d70cdbb3cfe5912c71cdce1c2c6bbd9c5d1 \
     --hash=sha256:46c99d2de99945ec5cb54f23c8cd5689f6d7177305ebff350a58ce5f8de1669e \
     --hash=sha256:500d4957e52ddc3351cabf489e79c91c17f6e0899158447047588650b5e69183 \
@@ -28,22 +32,37 @@ markupsafe==1.1.1 \
     --hash=sha256:62fe6c95e3ec8a7fad637b7f3d372c15ec1caa01ab47926cfdf7a75b40e0eac1 \
     --hash=sha256:6788b695d50a51edb699cb55e35487e430fa21f1ed838122d722e0ff0ac5ba15 \
     --hash=sha256:6dd73240d2af64df90aa7c4e7481e23825ea70af4b4922f8ede5b9e35f78a3b1 \
+    --hash=sha256:6f1e273a344928347c1290119b493a1f0303c52f5a5eae5f16d74f48c15d4a85 \
+    --hash=sha256:6fffc775d90dcc9aed1b89219549b329a9250d918fd0b8fa8d93d154918422e1 \
     --hash=sha256:717ba8fe3ae9cc0006d7c451f0bb265ee07739daf76355d06366154ee68d221e \
     --hash=sha256:79855e1c5b8da654cf486b830bd42c06e8780cea587384cf6545b7d9ac013a0b \
     --hash=sha256:7c1699dfe0cf8ff607dbdcc1e9b9af1755371f92a68f706051cc8c37d447c905 \
+    --hash=sha256:7fed13866cf14bba33e7176717346713881f56d9d2bcebab207f7a036f41b850 \
+    --hash=sha256:84dee80c15f1b560d55bcfe6d47b27d070b4681c699c572af2e3c7cc90a3b8e0 \
     --hash=sha256:88e5fcfb52ee7b911e8bb6d6aa2fd21fbecc674eadd44118a9cc3863f938e735 \
     --hash=sha256:8defac2f2ccd6805ebf65f5eeb132adcf2ab57aa11fdf4c0dd5169a004710e7d \
+    --hash=sha256:98bae9582248d6cf62321dcb52aaf5d9adf0bad3b40582925ef7c7f0ed85fceb \
     --hash=sha256:98c7086708b163d425c67c7a91bad6e466bb99d797aa64f965e9d25c12111a5e \
     --hash=sha256:9add70b36c5666a2ed02b43b335fe19002ee5235efd4b8a89bfcf9005bebac0d \
     --hash=sha256:9bf40443012702a1d2070043cb6291650a0841ece432556f784f004937f0f32c \
+    --hash=sha256:a6a744282b7718a2a62d2ed9d993cad6f5f585605ad352c11de459f4108df0a1 \
+    --hash=sha256:acf08ac40292838b3cbbb06cfe9b2cb9ec78fce8baca31ddb87aaac2e2dc3bc2 \
     --hash=sha256:ade5e387d2ad0d7ebf59146cc00c8044acbd863725f887353a10df825fc8ae21 \
     --hash=sha256:b00c1de48212e4cc9603895652c5c410df699856a2853135b3967591e4beebc2 \
     --hash=sha256:b1282f8c00509d99fef04d8ba936b156d419be841854fe901d8ae224c59f0be5 \
+    --hash=sha256:b1dba4527182c95a0db8b6060cc98ac49b9e2f5e64320e2b56e47cb2831978c7 \
     --hash=sha256:b2051432115498d3562c084a49bba65d97cf251f5a331c64a12ee7e04dacc51b \
+    --hash=sha256:b7d644ddb4dbd407d31ffb699f1d140bc35478da613b441c582aeb7c43838dd8 \
     --hash=sha256:ba59edeaa2fc6114428f1637ffff42da1e311e29382d81b339c1817d37ec93c6 \
+    --hash=sha256:bf5aa3cbcfdf57fa2ee9cd1822c862ef23037f5c832ad09cfea57fa846dec193 \
     --hash=sha256:c8716a48d94b06bb3b2524c2b77e055fb313aeb4ea620c8dd03a105574ba704f \
+    --hash=sha256:caabedc8323f1e93231b52fc32bdcde6db817623d33e100708d9a68e1f53b26b \
     --hash=sha256:cd5df75523866410809ca100dc9681e301e3c27567cf498077e8551b6d20e42f \
     --hash=sha256:cdb132fc825c38e1aeec2c8aa9338310d29d337bebbd7baa06889d09a60a1fa2 \
+    --hash=sha256:d53bc011414228441014aa71dbec320c66468c1030aae3a6e29778a3382d96e5 \
+    --hash=sha256:d73a845f227b0bfe8a7455ee623525ee656a9e2e749e4742706d80a6065d5e2c \
+    --hash=sha256:d9be0ba6c527163cbed5e0857c451fcd092ce83947944d6c14bc95441203f032 \
     --hash=sha256:e249096428b3ae81b08327a63a485ad0878de3fb939049038579ac0ef61e17e7 \
-    --hash=sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be
+    --hash=sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be \
+    --hash=sha256:feb7b34d6325451ef96bc0e36e1a6c0c1c64bc1fbec4b854f4529e51887b1621
     # via jinja2
diff --git a/contrib/packaging/requirements.txt.in b/contrib/packaging/requirements.txt.in
--- a/contrib/packaging/requirements.txt.in
+++ b/contrib/packaging/requirements.txt.in
@@ -1,2 +1,5 @@
+# Declare requirements for generating the compiled (frozen)
+# set of requirements in ./requirements.txt.
+
 docutils
 jinja2