diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a9b6df05..a62ae870 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -10,6 +10,8 @@ Unreleased
 Runtime Behavior Changes
 ~~~~~~~~~~~~~~~~~~~~~~~~
 
+* Bump version of Logback to 1.2.6. ``PHAB_ID=D742405``
+
 * Bump version of Jackson to 2.11.4. ``PHAB_ID=D727879``
 
 * Bump version of logback to 1.2.5. ``PHAB_ID=D729767``
diff --git a/build.sbt b/build.sbt
index 4f1f263f..ac29c085 100644
--- a/build.sbt
+++ b/build.sbt
@@ -6,7 +6,7 @@ Global / excludeLintKeys += scalacOptions
 // All Twitter library releases are date versioned as YY.MM.patch
 val releaseVersion = "21.9.0-SNAPSHOT"
 
-val logbackVersion = "1.2.5"
+val logbackVersion = "1.2.6"
 val opencensusVersion = "0.19.1"
 val slf4jVersion = "1.7.30"