diff --git a/CHANGELOG.md b/CHANGELOG.md
index ebb171fced06c1fd50dde53a77232d6c4d2d97a6..654a9ff4e400f6c50ce2fb2877c464526107fef2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## [(next version)](https://gitlab.cs.uni-duesseldorf.de/api/v4/projects/848/jobs/artifacts/master/raw/build/libs/prob2-jupyter-kernel-1.4.1-SNAPSHOT-all.jar?job=test)
 
-* (no changes yet)
+* Updated to ProB 1.12.1 (ProB Java API version 4.12.1).
 
 ## [1.4.0](https://stups.hhu-hosting.de/downloads/prob2-jupyter/prob2-jupyter-kernel-1.4.0-all.jar)
 
diff --git a/build.gradle b/build.gradle
index 0760a8c7610b14d0a8f711adff1d4fae94f5d914..dd27c783f180b2597f805e3b518ec39b9f240f5c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -37,7 +37,7 @@ configurations.all {
 dependencies {
 	implementation(group: "ch.qos.logback", name: "logback-classic", version: "1.3.7")
 	implementation(group: "com.google.guava", name: "guava", version: "31.1-jre")
-	implementation(group: "de.hhu.stups", name: "de.prob2.kernel", version: "4.12.0")
+	implementation(group: "de.hhu.stups", name: "de.prob2.kernel", version: "4.12.1")
 	implementation(group: "io.github.spencerpark", name: "jupyter-jvm-basekernel", version: "2.3.0")
 	implementation(group: "org.jetbrains", name: "annotations", version: "24.0.1")
 	implementation(group: "se.sawano.java", name: "alphanumeric-comparator", version: "1.4.1")