diff --git a/pom.xml b/pom.xml
index de21e185..672bf88e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -300,7 +300,7 @@
 		<dependency>
 			<groupId>com.github.openjump-gis</groupId>
 			<artifactId>topology-extension</artifactId>
-			<version>v2.0.5</version>
+			<version>9c1d788f8d</version>
 		</dependency>
 		<dependency>
 			<groupId>com.github.scoutant</groupId>
diff --git a/src/main/java/micycle/pgs/PGS_Meshing.java b/src/main/java/micycle/pgs/PGS_Meshing.java
index cb407153..070f7913 100644
--- a/src/main/java/micycle/pgs/PGS_Meshing.java
+++ b/src/main/java/micycle/pgs/PGS_Meshing.java
@@ -740,7 +740,7 @@ public static PShape simplifyMesh(PShape mesh, double tolerance, boolean preserv
 		CoverageSimplifier simplifier = new CoverageSimplifier(geometries);
 		Geometry[] output;
 		if (preservePerimeter) {
-			output = simplifier.simplifyInner(tolerance);
+			output = CoverageSimplifier.simplifyInner(geometries, tolerance);
 		} else {
 			output = simplifier.simplify(tolerance);
 		}