diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index edeb7ac6..2b169a45 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -374,17 +374,6 @@ jobs:
       - name: Install Java bindings
         shell: bash
         run: (cd ffi/bindings/java/dnp3 && sudo mvn install)
-      - name: Checkout dnp4s
-        uses: actions/checkout@v6
-        with:
-          repository: stepfunc/dnp4s
-          ssh-key: ${{ secrets.DNP4S_SSH_KEY }}
-          # a fixed dnp4s commit until dnp4s publishes releases
-          ref: be35ada4cfa99968cd07b292b9c88c4a36c32111
-          path: dnp4s
-      - name: Build dnp4s
-        working-directory: dnp4s
-        run: sudo mvn --batch-mode install
       - name: Capture packets during the conformance tests
         working-directory: conformance
         # capturing needs root, which the tests run as; local runs leave it off
diff --git a/conformance/device.ini b/conformance/device.ini
index 00e7c27d..ac6975ee 100644
--- a/conformance/device.ini
+++ b/conformance/device.ini
@@ -332,7 +332,7 @@ analogInput.analogInputEventsClass = 3
 # Unsolicited confirmation timeout value (in ms) min: 1
 # The outstation has one confirm timeout, for solicited and unsolicited responses: 2000 ms unless a procedure sets it.
 # This and outstation.app.confirm.timeout.ms must match it. It must also be no longer than the response timeout: the
-# outstation holds 8.11.2.1's READ until its startup response is confirmed or this timeout expires (dnp4s#7).
+# outstation holds 8.11.2.1's READ until its startup response is confirmed or this timeout expires (stepfunc/dnp3c#1).
 unsolicited.unsolicitedConfirmTimeoutMs = 2000
 
 # Other Master address where unsolicited responses can be configured to send to min: 0 max: 65519
diff --git a/conformance/pom.xml b/conformance/pom.xml
index f8295aae..4e37be00 100644
--- a/conformance/pom.xml
+++ b/conformance/pom.xml
@@ -12,7 +12,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <scala.version>3.9.0</scala.version>
         <dnp3.version>1.8.0-M1</dnp3.version>
-        <dnp4s.version>0.1.0-SNAPSHOT</dnp4s.version>
+        <dnp3c.version>0.1.0</dnp3c.version>
         <scala-maven-plugin.version>4.10.0</scala-maven-plugin.version>
     </properties>
 
@@ -63,9 +63,9 @@
             <scope>compile</scope>
         </dependency>
         <dependency>
-            <groupId>io.stepfunc.dnp4s</groupId>
-            <artifactId>conformance</artifactId>
-            <version>${dnp4s.version}</version>
+            <groupId>io.stepfunc</groupId>
+            <artifactId>dnp3c</artifactId>
+            <version>${dnp3c.version}</version>
         </dependency>
         <dependency>
             <groupId>io.stepfunc</groupId>
diff --git a/conformance/src/main/scala/io/stepfunc/conformance/dnp3/Dnp3rsIntegrationPlugin.scala b/conformance/src/main/scala/io/stepfunc/conformance/dnp3/Dnp3rsIntegrationPlugin.scala
index 2a289462..72c6be4b 100644
--- a/conformance/src/main/scala/io/stepfunc/conformance/dnp3/Dnp3rsIntegrationPlugin.scala
+++ b/conformance/src/main/scala/io/stepfunc/conformance/dnp3/Dnp3rsIntegrationPlugin.scala
@@ -1,9 +1,9 @@
 package io.stepfunc.conformance.dnp3
 
-import io.stepfunc.dnp4s.dnp3.app._
-import io.stepfunc.dnp4s.dnp3.app.objects.AttributeValue
-import io.stepfunc.dnp4s.dnp3.{ActionResult, ActionTiming, CheckReporter, DeferredCheck, EventExpectation, InputKind, IntegrationPlugin, PluginReporter}
-import io.stepfunc.dnp4s.protocol.parsing.UInt8
+import io.stepfunc.dnp3c.dnp3.app._
+import io.stepfunc.dnp3c.dnp3.app.objects.AttributeValue
+import io.stepfunc.dnp3c.dnp3.{ActionResult, ActionTiming, CheckReporter, DeferredCheck, EventExpectation, InputKind, IntegrationPlugin, PluginReporter}
+import io.stepfunc.dnp3c.protocol.parsing.UInt8
 import io.stepfunc.dnp3.{AddressFilter, AnalogInput, AnalogOutputStatus, BinaryInput, BinaryOutputStatus, Counter, DoubleBit, DoubleBitBinaryInput, EventBufferConfig, FrozenCounter, LinkErrorMode, Outstation, Runtime, RuntimeConfig, OutstationServer}
 import org.joou.UInteger
 import org.joou.Unsigned.{uint, ushort}
@@ -620,10 +620,10 @@ class Dnp3IntegrationPlugin extends IntegrationPlugin {
     if (expectedValue.idx != receivedValue.idx) throw new Exception("Unknown double-bit binary point event reported")
 
     // Check value
-    if ((expectedValue.value.value == DoubleBit.DETERMINED_OFF && receivedValue.point.value != io.stepfunc.dnp4s.dnp3.app.DoubleBit.DeterminedOff) ||
-      (expectedValue.value.value == DoubleBit.DETERMINED_ON && receivedValue.point.value != io.stepfunc.dnp4s.dnp3.app.DoubleBit.DeterminedOn) ||
-      (expectedValue.value.value == DoubleBit.INDETERMINATE && receivedValue.point.value != io.stepfunc.dnp4s.dnp3.app.DoubleBit.Indeterminate) ||
-      (expectedValue.value.value == DoubleBit.INTERMEDIATE && receivedValue.point.value != io.stepfunc.dnp4s.dnp3.app.DoubleBit.Intermediate)) {
+    if ((expectedValue.value.value == DoubleBit.DETERMINED_OFF && receivedValue.point.value != io.stepfunc.dnp3c.dnp3.app.DoubleBit.DeterminedOff) ||
+      (expectedValue.value.value == DoubleBit.DETERMINED_ON && receivedValue.point.value != io.stepfunc.dnp3c.dnp3.app.DoubleBit.DeterminedOn) ||
+      (expectedValue.value.value == DoubleBit.INDETERMINATE && receivedValue.point.value != io.stepfunc.dnp3c.dnp3.app.DoubleBit.Indeterminate) ||
+      (expectedValue.value.value == DoubleBit.INTERMEDIATE && receivedValue.point.value != io.stepfunc.dnp3c.dnp3.app.DoubleBit.Intermediate)) {
       throw new Exception(f"Double-bit binary ${receivedValue.idx} did not report proper value")
     }
 
diff --git a/conformance/src/main/scala/io/stepfunc/conformance/dnp3/Main.scala b/conformance/src/main/scala/io/stepfunc/conformance/dnp3/Main.scala
index 0fc301f2..418628c4 100644
--- a/conformance/src/main/scala/io/stepfunc/conformance/dnp3/Main.scala
+++ b/conformance/src/main/scala/io/stepfunc/conformance/dnp3/Main.scala
@@ -2,6 +2,6 @@ package io.stepfunc.conformance.dnp3
 
 object Main {
   def main(args: Array[String]): Unit = {
-    io.stepfunc.dnp4s.conformance.Main.run(args, new Dnp3IntegrationPlugin())
+    io.stepfunc.dnp3c.conformance.Main.run(args, new Dnp3IntegrationPlugin())
   }
 }
diff --git a/conformance/src/main/scala/io/stepfunc/conformance/dnp3/TrackingDatabase.scala b/conformance/src/main/scala/io/stepfunc/conformance/dnp3/TrackingDatabase.scala
index 9977be4a..16279d26 100644
--- a/conformance/src/main/scala/io/stepfunc/conformance/dnp3/TrackingDatabase.scala
+++ b/conformance/src/main/scala/io/stepfunc/conformance/dnp3/TrackingDatabase.scala
@@ -1,7 +1,7 @@
 package io.stepfunc.conformance.dnp3
 
-import io.stepfunc.dnp4s.dnp3.app.EventClass
-import io.stepfunc.dnp4s.dnp3.app.objects.AttributeValue
+import io.stepfunc.dnp3c.dnp3.app.EventClass
+import io.stepfunc.dnp3c.dnp3.app.objects.AttributeValue
 import io.stepfunc.dnp3._
 import org.joou.UByte
 import org.joou.Unsigned.{ubyte, uint, ushort}