diff --git a/RELEASE.CHANGELOG.md b/RELEASE.CHANGELOG.md
index c605c2a..b3927ae 100644
--- a/RELEASE.CHANGELOG.md
+++ b/RELEASE.CHANGELOG.md
@@ -1,3 +1,7 @@
+### Jun 6, 2025
+`3.1.2`
+- Don't Ignore Custom Formatters. ([#49](https://github.com/aws/aws-lambda-ruby-runtime-interface-client/pull/49))
+
 ### Jun 5, 2025
 `3.1.1`
 - Fix Logger Formatting override being ignored. ([#47](https://github.com/aws/aws-lambda-ruby-runtime-interface-client/pull/47))
diff --git a/lib/aws_lambda_ric/logger_patch.rb b/lib/aws_lambda_ric/logger_patch.rb
index bc3e0f1..f872d37 100644
--- a/lib/aws_lambda_ric/logger_patch.rb
+++ b/lib/aws_lambda_ric/logger_patch.rb
@@ -9,7 +9,7 @@ def initialize(logdev, shift_age = 0, shift_size = 1048576, level: 'debug',
     # use unpatched constructor if logdev is a filename or an IO Object other than $stdout or $stderr
     if !logdev || logdev == $stdout || logdev == $stderr
       logdev_lambda_override = AwsLambdaRIC::TelemetryLogger.telemetry_log_sink
-      formatter_override = LogFormatter.new
+      formatter_override = formatter_override || LogFormatter.new
     end
 
     super(logdev_lambda_override, shift_age, shift_size, level: level, progname: progname,
diff --git a/lib/aws_lambda_ric/version.rb b/lib/aws_lambda_ric/version.rb
index a32be95..8c8c8af 100644
--- a/lib/aws_lambda_ric/version.rb
+++ b/lib/aws_lambda_ric/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module AwsLambdaRIC
-  VERSION = '3.1.1'
+  VERSION = '3.1.2'
 end