diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b7ad9fa..0cbb2fa 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -2,6 +2,7 @@
 
 - [Open Package](#open-package)
 - [Lint Package](#lint-package)
+- [Testing](#testing)
 - [Creating Releases](#creating-releases)
 
 ## Open Package
@@ -28,6 +29,14 @@ To run analysis rules:
 make analyze
 ```
 
+## Testing
+
+To re-record all existing snapshot references, delete all using the following command and then run the tests.
+
+```
+make delete-snapshots
+```
+
 ## Creating Releases
 
 Releases are made [on the GitHub website](https://github.com/Tinder/CollectionBuilders/releases/new).
diff --git a/Makefile b/Makefile
index ab85709..ad8d665 100644
--- a/Makefile
+++ b/Makefile
@@ -39,6 +39,14 @@ analyze:
 	swift package plugin \
 		swiftlint analyze --strict --progress --reporter "$(format)" --compiler-log-path "$$XCODEBUILD_LOG"
 
+.PHONY: delete-snapshots
+delete-snapshots:
+	@for snapshots in $$(find Tests -type d -name "__Snapshots__"); \
+	do \
+		rm -rf "$$snapshots"; \
+		echo "Deleted $$snapshots"; \
+	done
+
 .PHONY: docs
 docs: target ?= CollectionBuilders
 docs: destination ?= generic/platform=iOS
diff --git a/Package.swift b/Package.swift
index 4563315..62debf3 100644
--- a/Package.swift
+++ b/Package.swift
@@ -36,7 +36,7 @@ let package = Package(
                 "CollectionBuilders",
                 "Nimble",
             ]),
-    ],
+    ]
 )
 
 package.targets.forEach { target in