diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0dbfdc232852e5d30ae7e2649bb858b3a4652b3e..56a98721d08561725357ccf2754964ec2f4ced06 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 ## [(next version)](https://gitlab.cs.uni-duesseldorf.de/api/v4/projects/848/jobs/artifacts/master/raw/build/libs/prob2-jupyter-kernel-1.2.1-SNAPSHOT-all.jar?job=test)
 
 * Added support for Java 17.
-* Updated ProB 2 to version 4.0.0-SNAPSHOT.
+* Updated ProB 2 to version 3.15.0.
 * Added a `:language` command to allow changing the language used to parse user input. For example `:language event_b` can be used to switch to Event-B syntax when a non-Event-B machine is loaded (or no machine at all).
 * Made `:let` syntax more flexible: both `:let name value` and `:let name = value` are now allowed.
 * Improved the performance of loading machines by reusing the existing instance of ProB instead of starting a new one for each machine.
diff --git a/build.gradle b/build.gradle
index 85cde39f0392ca38e175536e59b88f3449d4dda9..8fab545192f8b98fcd4d67e2f41f829afc8f6e2c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -39,7 +39,7 @@ dependencies {
 	implementation(group: "ch.qos.logback", name: "logback-classic", version: "1.2.5")
 	implementation(group: "com.google.code.gson", name: "gson", version: "2.8.8")
 	implementation(group: "com.google.guava", name: "guava", version: "30.1.1-jre")
-	implementation(group: "de.hhu.stups", name: "de.prob2.kernel", version: "4.0.0-SNAPSHOT")
+	implementation(group: "de.hhu.stups", name: "de.prob2.kernel", version: "3.15.0")
 	implementation(group: "io.github.spencerpark", name: "jupyter-jvm-basekernel", version: "2.3.0")
 	implementation(group: "org.jetbrains", name: "annotations", version: "22.0.0")
 	implementation(group: "se.sawano.java", name: "alphanumeric-comparator", version: "1.4.1")