diff --git a/CHANGELOG.md b/CHANGELOG.md
index d0cfa6e..889c95d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 This file summarizes **notable** changes for each release, but does not describe internal changes unless they are particularly exciting. For complete details please see the corresponding [milestones](https://github.com/tpolecat/tut/milestones?state=closed) and their associated issues.
 
+### <a name="0.5.5"></a>New and Noteworthy for Version 0.5.5
+
+This version fixes stack overflows with large input files and cleans up the FP micro-library.
+
 ### <a name="0.5.4"></a>New and Noteworthy for Version 0.5.4
 
 This version updates to scala-xml v1.0.6 which is evidently required for 2.13.0-M1.
diff --git a/README.md b/README.md
index 56b79d7..b35dddf 100644
--- a/README.md
+++ b/README.md
@@ -7,9 +7,9 @@
 
 **tut** is a very simple documentation tool for Scala that reads Markdown files and interprets Scala code in `tut` sheds, allowing you to write documentation that is typechecked and run as part of your build.
 
-The current version is **0.5.4** (changelog [here](CHANGELOG.md), upgrade instructions for 0.5.x series [here](#0.5.x)) which runs on **Scala 2.10**, **2.11**, **2.12**, and **2.13.0-M1**.
+The current version is **0.5.5** (changelog [here](CHANGELOG.md), upgrade instructions for 0.5.x series [here](#0.5.x)) which runs on **Scala 2.10**, **2.11**, **2.12**, and **2.13.0-M1**.
 
-:sparkles: Also available is version **0.6.0** which is functionally the same as **0.5.4** but runs on **sbt 1.0** and supports **Scala 2.11**, **2.12**, and **2.13.0-M1**.
+:sparkles: Also available is version **0.6.0** which is functionally the same as **0.5.5** but runs on **sbt 1.0** and supports **Scala 2.11**, **2.12**, and **2.13.0-M1**.
 
 Projects using **tut** include [doobie](https://github.com/tpolecat/doobie), [frameless](https://github.com/typelevel/frameless) and [cats](https://github.com/typelevel/cats). If you're using it and would like be added to the list, please submit a PR!
 
@@ -20,7 +20,7 @@ Projects using **tut** include [doobie](https://github.com/tpolecat/doobie), [fr
 **1**. Add the following to `project/plugins.sbt`:
 
 ```scala
-addSbtPlugin("org.tpolecat" % "tut-plugin" % "0.5.4")
+addSbtPlugin("org.tpolecat" % "tut-plugin" % "0.5.5")
 ```
 
 **2**.  And add the following to `build.sbt`:
@@ -53,7 +53,7 @@ In case you want to run **tut** without sbt, you can use **coursier** instead.
 **2**. Run **tut**:
 
 ```
-coursier launch -r "https://dl.bintray.com/tpolecat/maven/" org.tpolecat:tut-core_2.11:0.5.4 -- \
+coursier launch -r "https://dl.bintray.com/tpolecat/maven/" org.tpolecat:tut-core_2.11:0.5.5 -- \
   in out '.*\.md$' -classpath $(coursier fetch -p com.chuusai:shapeless_2.11:2.3.1)
 ```
 
diff --git a/build.sbt b/build.sbt
index 030f86a..9e1b913 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 organization in ThisBuild := "org.tpolecat"
 
-version in ThisBuild := "0.5.5-SNAPSHOT"
+version in ThisBuild := "0.5.6-SNAPSHOT"
 
 publishArtifact := false