diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 94a25f7f..00000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/pom-jdk17.xml b/pom-jdk17.xml
index 12e9c354..995580ea 100644
--- a/pom-jdk17.xml
+++ b/pom-jdk17.xml
@@ -88,7 +88,7 @@
     </modules>
 
     <properties>
-        <eclipse.collections.version>11.1.0</eclipse.collections.version>
+        <eclipse.collections.version>12.0.0.M3</eclipse.collections.version>
         <junit5.version>5.10.0</junit5.version>
         <jackson.version>2.14.1</jackson.version>
         <jol.version>0.16</jol.version>
diff --git a/pom.xml b/pom.xml
index c2140cb4..88b64386 100644
--- a/pom.xml
+++ b/pom.xml
@@ -95,7 +95,7 @@
     </modules>
 
     <properties>
-        <eclipse.collections.version>11.1.0</eclipse.collections.version>
+        <eclipse.collections.version>12.0.0.M3</eclipse.collections.version>
         <junit5.version>5.10.0</junit5.version>
         <jackson.version>2.14.1</jackson.version>
         <jol.version>0.16</jol.version>