diff --git a/GameData/RP-1/RP-1.version b/GameData/RP-1/RP-1.version
index 34ea85fae5e..523ed12033d 100644
--- a/GameData/RP-1/RP-1.version
+++ b/GameData/RP-1/RP-1.version
@@ -1,12 +1,12 @@
 {
     "NAME": "Realistic Progression One",
     "URL": "https://raw.githubusercontent.com/KSP-RO/RP-1/master/GameData/RP-1/RP-1.version",
-    "DOWNLOAD": "https://github.com/KSP-RO/RP-1/releases/download/v3.1.0.0/RP-1-v3.1.0.0.zip",
+    "DOWNLOAD": "https://github.com/KSP-RO/RP-1/releases/download/v3.1.1.0/RP-1-v3.1.1.0.zip",
     "HOMEPAGE": "https://github.com/KSP-RO/RP-1/",
     "VERSION": {
         "MAJOR": 3,
         "MINOR": 1,
-        "PATCH": 0,
+        "PATCH": 1,
         "BUILD": 0
     },
     "KSP_VERSION": {
diff --git a/GameData/RP-1/changelog.cfg b/GameData/RP-1/changelog.cfg
index 69bb82a375a..42dba6da717 100644
--- a/GameData/RP-1/changelog.cfg
+++ b/GameData/RP-1/changelog.cfg
@@ -5,6 +5,17 @@ KERBALCHANGELOG
 	author = KSP-RO team
 	website = github.com/KSP-RO/RP-1
 	VERSION
+	{
+		version = 3.1.1.0
+		versionKSP = 1.12.3
+		CHANGE
+		{
+			change = What's Changed
+			subchange = Update for Kerbalism 3.18
+			subchange = Spaceplane crew carrier pods require training, but those training times are minimal
+		}
+	}
+	VERSION
 	{
 		version = 3.1.0.0
 		versionKSP = 1.12.3
diff --git a/README.md b/README.md
index fa2d1ed3541..3069c3f5dcf 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 <p align="center">
  <a href="https://nightly.link/KSP-RO/RP-1/workflows/build/master/RP-1.zip" rel="nofollow"><img src="https://badgen.net/badge/Nightly%20build/download/blue"></a>
  <a href="https://discord.gg/V73jjNd" rel="nofollow"><img src="https://badgen.net/discord/online-members/V73jjNd?icon=discord"></a>
- <a href="https://github.com/KSP-RO/RP-1/compare/v3.1.0.0...master" rel="nofollow"><img src="https://img.shields.io/github/commits-since/KSP-RO/RP-1/latest"></a>
+ <a href="https://github.com/KSP-RO/RP-1/compare/v3.1.1.0...master" rel="nofollow"><img src="https://img.shields.io/github/commits-since/KSP-RO/RP-1/latest"></a>
 </p>
 
 Welcome to Realistic Progression One, the heavyweight career addon for Kerbal Space Program's Realism Overhaul.