diff --git a/CHANGELOG.md b/CHANGELOG.md
index 136a7e4..e5f9466 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+- NOTHING
+
+## [3.1.1] — 2020-09-09
+
 ### Fixed
 
 - `java` support.
diff --git a/QLColorCode.xcodeproj/project.pbxproj b/QLColorCode.xcodeproj/project.pbxproj
index 7d637e3..d303608 100644
--- a/QLColorCode.xcodeproj/project.pbxproj
+++ b/QLColorCode.xcodeproj/project.pbxproj
@@ -287,9 +287,9 @@
 			buildSettings = {
 				CLANG_ENABLE_OBJC_WEAK = YES;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = "3.1.1.dev1 ";
+				CURRENT_PROJECT_VERSION = 3.1.1;
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
-				MARKETING_VERSION = 3.1.1.dev1;
+				MARKETING_VERSION = 3.1.1;
 				OTHER_CFLAGS = "-DDEBUG";
 			};
 			name = Debug;
@@ -299,9 +299,9 @@
 			buildSettings = {
 				CLANG_ENABLE_OBJC_WEAK = YES;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = "3.1.1.dev1 ";
+				CURRENT_PROJECT_VERSION = 3.1.1;
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
-				MARKETING_VERSION = 3.1.1.dev1;
+				MARKETING_VERSION = 3.1.1;
 			};
 			name = Release;
 		};