diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c0217aa..77999901 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Change Log
 
+## [0.6.16](https://github.com/nicklockwood/Euclid/releases/tag/0.6.16) (2023-08-11)
+
+- Fixed `Mesh.stlString()` function
+
 ## [0.6.15](https://github.com/nicklockwood/Euclid/releases/tag/0.6.15) (2023-07-30)
 
 - Fixed assertion failure in `Polygon.tessellate()` function
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f4612cec..757ced0e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -18,7 +18,7 @@ All types of PR are welcome, but please do read these guidelines carefully to av
 
 Types of PR:
 
-* Documentation fixes - if you've found a typo, or incorrect comment, either in the README or a code comment, feel free to create a PR directly against the **master** branch.
+* Documentation fixes - if you've found a typo, or incorrect comment, either in the README or a code comment, feel free to create a PR directly against the **main** branch.
 
 * Minor code fixes - a typo in a method name or a trivial bug fix should be made against the **develop** branch.
 
diff --git a/Euclid.podspec.json b/Euclid.podspec.json
index bd1e2cd6..31445813 100644
--- a/Euclid.podspec.json
+++ b/Euclid.podspec.json
@@ -1,6 +1,6 @@
 {
   "name": "Euclid",
-  "version": "0.6.15",
+  "version": "0.6.16",
   "license": {
     "type": "MIT",
     "file": "LICENSE.md"
@@ -10,7 +10,7 @@
   "authors": "Nick Lockwood",
   "source": {
     "git": "https://github.com/nicklockwood/Euclid.git",
-    "tag": "0.6.15"
+    "tag": "0.6.16"
   },
   "source_files": "Sources",
   "requires_arc": true,
diff --git a/Euclid.xcodeproj/project.pbxproj b/Euclid.xcodeproj/project.pbxproj
index 339d257e..244dfb01 100644
--- a/Euclid.xcodeproj/project.pbxproj
+++ b/Euclid.xcodeproj/project.pbxproj
@@ -760,7 +760,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
-				MARKETING_VERSION = 0.6.15;
+				MARKETING_VERSION = 0.6.16;
 				OTHER_SWIFT_FLAGS = "-Xfrontend -warn-long-expression-type-checking=75";
 				PRODUCT_BUNDLE_IDENTIFIER = com.charcoaldesign.Euclid;
 				PRODUCT_MODULE_NAME = "$(PRODUCT_NAME:c99extidentifier)";
@@ -793,7 +793,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
-				MARKETING_VERSION = 0.6.15;
+				MARKETING_VERSION = 0.6.16;
 				OTHER_SWIFT_FLAGS = "-Xfrontend -warn-long-expression-type-checking=75";
 				PRODUCT_BUNDLE_IDENTIFIER = com.charcoaldesign.Euclid;
 				PRODUCT_MODULE_NAME = "$(PRODUCT_NAME:c99extidentifier)";