diff --git a/convention/src/main/kotlin/jf.manifold.gradle.kts b/convention/src/main/kotlin/jf.manifold.gradle.kts
index f43829f..30a17ac 100644
--- a/convention/src/main/kotlin/jf.manifold.gradle.kts
+++ b/convention/src/main/kotlin/jf.manifold.gradle.kts
@@ -4,7 +4,7 @@ plugins {
     id("jf.java")
 }
 
-val manifoldVersion by extra("2023.1.10")
+val manifoldVersion by extra("2023.1.33")
 
 dependencies {
     implementation("systems.manifold:manifold-props-rt:$manifoldVersion")