diff --git a/convention/src/main/kotlin/jf.manifold.gradle.kts b/convention/src/main/kotlin/jf.manifold.gradle.kts
index 12a80ec..8023163 100644
--- a/convention/src/main/kotlin/jf.manifold.gradle.kts
+++ b/convention/src/main/kotlin/jf.manifold.gradle.kts
@@ -5,7 +5,7 @@ plugins {
     `java-library`
 }
 
-val manifoldVersion by extra("2022.1.38")
+val manifoldVersion by extra("2023.1.2")
 
 dependencies {
     implementation("systems.manifold:manifold-props-rt:$manifoldVersion")