diff --git a/.evergreen/resync-specs.sh b/.evergreen/resync-specs.sh
new file mode 100755
index 000000000..1d0742258
--- /dev/null
+++ b/.evergreen/resync-specs.sh
@@ -0,0 +1,145 @@
+#!/bin/bash
+# exit when any command fails
+set -e
+PYMONGO=$(dirname "$(cd "$(dirname "$0")"; pwd)")
+SPECS=${MDB_SPECS:-~/Work/specifications}
+
+help (){
+  echo "Usage: resync_specs.sh [-bcsp] spec"
+  echo "Required arguments:"
+  echo " spec     determines which folder the spec tests will be copied from."
+  echo "Optional flags:"
+  echo " -b  is used to add a string to the blocklist for that next run. Can be used"
+  echo "     any number of times on a single command to block multiple patterns."
+  echo "     You can use any regex pattern (it is passed to 'grep -Ev')."
+  echo " -c  is used to set a branch or commit that will be checked out in the"
+  echo "     specifications repo before copying."
+  echo " -s  is used to set a unique path to the specs repo for that specific"
+  echo "     run."
+  echo "Notes:"
+  echo "You can export the environment variable MDB_SPECS to set the specs"
+  echo " repo similar to -s, but this will persist between runs until you "
+  echo "unset it."
+}
+
+# Parse flag args
+BRANCH=''
+BLOCKLIST='.*\.yml'
+while getopts 'b:c:s:' flag; do
+  case "${flag}" in
+    b) BLOCKLIST+="|$OPTARG"
+      ;;
+    c) BRANCH="${OPTARG}"
+      ;;
+    s) SPECS="${OPTARG}"
+      ;;
+    *) help; exit 0
+      ;;
+  esac
+done
+shift $((OPTIND-1))
+
+if [ -z $BRANCH ]
+then
+  git -C $SPECS checkout $BRANCH
+fi
+
+# Ensure the JSON files are up to date.
+cd $SPECS/source
+make
+cd -
+# cpjson unified-test-format/tests/invalid unified-test-format/invalid
+# * param1: Path to spec tests dir in specifications repo
+# * param2: Path to where the corresponding tests live in Python.
+cpjson () {
+    find "$PYMONGO"/test/$2 -type f -delete
+    cd "$SPECS"/source/$1
+    find . -name '*.json' | grep -Ev "${BLOCKLIST}" | cpio -pdm \
+    $PYMONGO/test/$2
+    printf "\nIgnored files for ${PWD}"
+    printf "\n%s\n" "$(diff <(find . -name '*.json' | sort) \
+    <(find . -name '*.json' | grep -Ev "${BLOCKLIST}" | sort))" | \
+    sed -e '/^[0-9]/d' | sed -e 's|< ./||g'
+}
+
+for spec in "$@"
+do
+  case "$spec" in
+    bson*corpus)
+      cpjson bson-corpus/tests/ bson_corpus
+      ;;
+    max*staleness)
+      cpjson max-staleness/tests/ max_staleness
+      ;;
+    connection*string)
+      cpjson connection-string/tests/ connection_string/test
+      ;;
+    change*streams)
+      cpjson change-streams/tests/ change_streams/
+      ;;
+    cmap|CMAP)
+      cpjson connection-monitoring-and-pooling/tests cmap
+      ;;
+    command*monitoring)
+      cpjson command-monitoring/tests command_monitoring
+      ;;
+    crud|CRUD)
+      cpjson crud/tests/ crud
+      ;;
+    load*balancer)
+      cpjson load-balancers/tests load_balancer
+      ;;
+    initial-dns-seedlist-discovery|srv_seedlist)
+      cpjson initial-dns-seedlist-discovery/tests/ srv_seedlist
+      ;;
+    old_srv_seedlist)
+      cpjson initial-dns-seedlist-discovery/tests srv_seedlist
+      ;;
+    retryable*reads)
+      cpjson retryable-reads/tests/ retryable_reads
+      ;;
+    retryable*writes)
+      cpjson retryable-writes/tests/ retryable_writes
+      ;;
+    sdam|SDAM)
+      cpjson server-discovery-and-monitoring/tests/errors \
+      discovery_and_monitoring/errors
+      cpjson server-discovery-and-monitoring/tests/rs \
+      discovery_and_monitoring/rs
+      cpjson server-discovery-and-monitoring/tests/sharded \
+      discovery_and_monitoring/sharded
+      cpjson server-discovery-and-monitoring/tests/single \
+      discovery_and_monitoring/single
+      cpjson server-discovery-and-monitoring/tests/integration \
+      discovery_and_monitoring_integration
+      cpjson server-discovery-and-monitoring/tests/load-balanced \
+      discovery_and_monitoring/load-balanced
+      ;;
+    sdam*monitoring)
+      cpjson server-discovery-and-monitoring/tests/monitoring sdam_monitoring
+      ;;
+    server*selection)
+      cpjson server-selection/tests/ server_selection
+      ;;
+    sessions)
+      cpjson sessions/tests/ sessions
+      ;;
+    transactions|transactions-convenient-api)
+      cpjson transactions/tests/ transactions
+      cpjson transactions-convenient-api/tests/ transactions-convenient-api
+      ;;
+    unified)
+      cpjson unified-test-format/tests/ unified-test-format/
+      ;;
+    uri|uri*options)
+      cpjson uri-options/tests uri_options
+      ;;
+    versioned-api)
+      cpjson versioned-api/tests versioned-api
+      ;;
+    *)
+      echo "Do not know how to resync spec tests for '${spec}'"
+      help
+      ;;
+  esac
+done
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index cf451172a..40dca00e0 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -48,3 +48,23 @@ just make your changes to the inline documentation of the appropriate
 branch and submit a `pull request <https://help.github.com/articles/using-pull-requests>`_.
 You might also use the GitHub `Edit <https://github.com/blog/844-forking-with-the-edit-button>`_
 button.
+
+Re-sync Spec Tests
+-----------------
+
+If you would like to re-sync the copy of the specification tests in the
+PyMongo repository with that which is inside the `specifications repo
+<https://github.com/mongodb/specifications>`_, please
+use the script provided in ``.evergreen/resync-specs.sh``.::
+
+    git clone git@github.com:mongodb/specifications.git
+    export MDB_SPECS=~/specifications
+    cd ~/mongo-python-driver/.evergreen
+    ./resync-specs.sh -b "connection-string*" crud bson-corpus
+    cd ..
+
+The ``-b`` flag adds as a regex pattern to block files you do not wish to
+update in PyMongo.
+This is primarily helpful if you are implementing a new feature in PyMongo
+that has spec tests already implemented, or if you are attempting to
+validate new spec tests in PyMongo.
\ No newline at end of file