diff --git a/cdt.aggrcon b/cdt.aggrcon
index 3d850d6..db19506 100644
--- a/cdt.aggrcon
+++ b/cdt.aggrcon
@@ -1,71 +1,71 @@
 <?xml version="1.0" encoding="ASCII"?>
 <aggregator:Contribution xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:aggregator="http://www.eclipse.org/cbi/p2repo/2011/aggregator/1.1.0" label="CDT">
-  <repositories location="https://download.eclipse.org/tools/cdt/releases/10.3/cdt-10.3.0/" description="CDT updates">
+  <repositories location="https://download.eclipse.org/tools/cdt/builds/10.4/cdt-10.4.0-m1/" description="CDT updates">
     <bundles name="org.eclipse.cdt.core.linux" versionRange="[6.0.0.202008310002]"/>
-    <bundles name="org.eclipse.cdt.core.linux.x86_64" versionRange="[6.0.200.202106080120]"/>
-    <bundles name="org.eclipse.cdt.core.macosx" versionRange="[6.0.200.202106080120]"/>
+    <bundles name="org.eclipse.cdt.core.linux.x86_64" versionRange="[6.0.300.202107121620]"/>
+    <bundles name="org.eclipse.cdt.core.macosx" versionRange="[6.0.300.202107121620]"/>
     <bundles name="org.eclipse.cdt.core.win32" versionRange="[6.0.200.202102030214]"/>
-    <bundles name="org.eclipse.cdt.core.linux.aarch64" versionRange="[6.0.200.202106080120]"/>
-    <features name="org.eclipse.cdt.feature.group" versionRange="[10.3.0.202106080120]">
+    <bundles name="org.eclipse.cdt.core.linux.aarch64" versionRange="[6.0.300.202107121620]"/>
+    <features name="org.eclipse.cdt.feature.group" versionRange="[10.4.0.202107121620]">
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.sdk.feature.group" versionRange="[10.3.0.202106080120]">
+    <features name="org.eclipse.cdt.sdk.feature.group" versionRange="[10.4.0.202107121620]">
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.debug.gdbjtag.feature.group" versionRange="[10.3.0.202104261723]">
+    <features name="org.eclipse.cdt.debug.gdbjtag.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Mobile%20and%20Device%20Development']"/>
     </features>
-    <features name="org.eclipse.cdt.platform.feature.group" versionRange="[10.3.0.202106080120]"/>
-    <features name="org.eclipse.cdt.debug.ui.memory.feature.group" versionRange="[10.3.0.202104061706]">
+    <features name="org.eclipse.cdt.platform.feature.group" versionRange="[10.4.0.202107121620]"/>
+    <features name="org.eclipse.cdt.debug.ui.memory.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Mobile%20and%20Device%20Development']"/>
     </features>
-    <features name="org.eclipse.cdt.launch.remote.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.cdt.launch.remote.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Mobile%20and%20Device%20Development']"/>
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.build.crossgcc.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.cdt.build.crossgcc.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Mobile%20and%20Device%20Development']"/>
     </features>
-    <features name="org.eclipse.cdt.msw.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.cdt.msw.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.autotools.feature.group" versionRange="[10.3.0.202104121328]">
+    <features name="org.eclipse.cdt.autotools.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.testsrunner.feature.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.cdt.testsrunner.feature.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.visualizer.feature.group" versionRange="[10.3.0.202104042017]"/>
-    <features name="org.eclipse.cdt.managedbuilder.llvm.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.cdt.visualizer.feature.group" versionRange="[10.4.0.202106130052]"/>
+    <features name="org.eclipse.cdt.managedbuilder.llvm.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.gnu.multicorevisualizer.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.cdt.gnu.multicorevisualizer.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.docker.launcher.feature.group" versionRange="[10.3.0.202106071539]">
+    <features name="org.eclipse.cdt.docker.launcher.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='Programming%20Languages']"/>
     </features>
-    <features name="org.eclipse.cdt.debug.standalone.feature.group" versionRange="[10.3.0.202104121328]"/>
-    <features name="org.eclipse.cdt.qt.feature.group" versionRange="[10.3.0.202104042017]"/>
-    <features name="org.eclipse.cdt.cmake.feature.group" versionRange="[10.3.0.202106071842]"/>
-    <features name="org.eclipse.cdt.launch.serial.feature.feature.group" versionRange="[10.3.0.202104042017]"/>
-    <features name="org.eclipse.cdt.debug.dap.feature.group" versionRange="[10.3.0.202105191332]"/>
-    <features name="org.eclipse.cdt.debug.dap.gdbjtag.feature.group" versionRange="[10.3.0.202104042017]"/>
-    <features name="org.eclipse.tm.terminal.connector.remote.feature.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.cdt.debug.standalone.feature.group" versionRange="[10.4.0.202106150220]"/>
+    <features name="org.eclipse.cdt.qt.feature.group" versionRange="[10.4.0.202106130052]"/>
+    <features name="org.eclipse.cdt.cmake.feature.group" versionRange="[10.4.0.202106281904]"/>
+    <features name="org.eclipse.cdt.launch.serial.feature.feature.group" versionRange="[10.4.0.202106130052]"/>
+    <features name="org.eclipse.cdt.debug.dap.feature.group" versionRange="[10.4.0.202106130052]"/>
+    <features name="org.eclipse.cdt.debug.dap.gdbjtag.feature.group" versionRange="[10.4.0.202106130052]"/>
+    <features name="org.eclipse.tm.terminal.connector.remote.feature.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='General%20Purpose%20Tools']"/>
     </features>
-    <features name="org.eclipse.tm.terminal.feature.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.tm.terminal.feature.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='General%20Purpose%20Tools']"/>
     </features>
-    <features name="org.eclipse.tm.terminal.connector.cdtserial.feature.feature.group" versionRange="[10.3.0.202104042017]">
+    <features name="org.eclipse.tm.terminal.connector.cdtserial.feature.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='General%20Purpose%20Tools']"/>
     </features>
-    <features name="org.eclipse.launchbar.feature.group" versionRange="[10.3.0.202106071539]">
+    <features name="org.eclipse.launchbar.feature.group" versionRange="[10.4.0.202106130052]">
       <categories href="simrel.aggr#//@customCategories[identifier='General%20Purpose%20Tools']"/>
     </features>
-    <features name="org.eclipse.launchbar.remote.feature.group" versionRange="[10.3.0.202104042017]"/>
-    <features name="org.eclipse.cdt.meson.feature.group" versionRange="[10.3.0.202104121328]"/>
-    <features name="org.eclipse.cdt.unittest.feature.feature.group" versionRange="[10.3.0.202104042017]"/>
+    <features name="org.eclipse.launchbar.remote.feature.group" versionRange="[10.4.0.202106130052]"/>
+    <features name="org.eclipse.cdt.meson.feature.group" versionRange="[10.4.0.202106130052]"/>
+    <features name="org.eclipse.cdt.unittest.feature.feature.group" versionRange="[10.4.0.202106130052]"/>
   </repositories>
   <contacts href="simrel.aggr#//@contacts[email='jonah@kichwacoders.com']"/>
 </aggregator:Contribution>