diff --git a/app/src/androidTest/java/org/thoughtcrime/securesms/messages/MessageProcessingPerformanceTest.kt b/app/src/androidTest/java/org/thoughtcrime/securesms/messages/MessageProcessingPerformanceTest.kt
index 710d7b8e9c..42bbfe5592 100644
--- a/app/src/androidTest/java/org/thoughtcrime/securesms/messages/MessageProcessingPerformanceTest.kt
+++ b/app/src/androidTest/java/org/thoughtcrime/securesms/messages/MessageProcessingPerformanceTest.kt
@@ -21,6 +21,7 @@ import org.thoughtcrime.securesms.recipients.Recipient
 import org.thoughtcrime.securesms.testing.AliceClient
 import org.thoughtcrime.securesms.testing.BobClient
 import org.thoughtcrime.securesms.testing.Entry
+import org.thoughtcrime.securesms.testing.FakeClientHelpers
 import org.thoughtcrime.securesms.testing.SignalActivityRule
 import org.thoughtcrime.securesms.testing.awaitFor
 import org.whispersystems.signalservice.internal.push.Envelope
@@ -54,8 +55,7 @@ class MessageProcessingPerformanceTest {
   @Before
   fun setup() {
     mockkStatic(SealedSenderAccessUtil::class)
-    // TODO reinstate this for libsignal 0.76.1
-//    every { SealedSenderAccessUtil.getCertificateValidator() } returns FakeClientHelpers.noOpCertificateValidator
+    every { SealedSenderAccessUtil.getCertificateValidator() } returns FakeClientHelpers.noOpCertificateValidator
 
     mockkObject(MessageContentProcessor)
     every { MessageContentProcessor.create(harness.application) } returns TimingMessageContentProcessor(harness.application)
diff --git a/app/src/androidTest/java/org/thoughtcrime/securesms/testing/FakeClientHelpers.kt b/app/src/androidTest/java/org/thoughtcrime/securesms/testing/FakeClientHelpers.kt
index 24594ea9b1..0aa395e925 100644
--- a/app/src/androidTest/java/org/thoughtcrime/securesms/testing/FakeClientHelpers.kt
+++ b/app/src/androidTest/java/org/thoughtcrime/securesms/testing/FakeClientHelpers.kt
@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.testing
 
 import okio.ByteString.Companion.toByteString
 import org.signal.core.util.Base64
+import org.signal.libsignal.metadata.certificate.CertificateValidator
 import org.signal.libsignal.metadata.certificate.SenderCertificate
 import org.signal.libsignal.metadata.certificate.ServerCertificate
 import org.signal.libsignal.protocol.ecc.ECKeyPair
@@ -22,10 +23,9 @@ import java.util.UUID
 
 object FakeClientHelpers {
 
-  // TODO reinstate this for libsignal 0.76.1
-//  val noOpCertificateValidator = object : CertificateValidator(ECKeyPair.generate().publicKey) {
-//    override fun validate(certificate: SenderCertificate, validationTime: Long) = Unit
-//  }
+  val noOpCertificateValidator = object : CertificateValidator(ECKeyPair.generate().publicKey) {
+    override fun validate(certificate: SenderCertificate, validationTime: Long) = Unit
+  }
 
   fun createCertificateFor(trustRoot: ECKeyPair, uuid: UUID, e164: String, deviceId: Int, identityKey: ECPublicKey, expires: Long): SenderCertificate {
     val serverKey: ECKeyPair = ECKeyPair.generate()
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f4eb7ff6b0..fd3080f202 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -13,7 +13,7 @@ androidx-window = "1.3.0"
 glide = "4.15.1"
 gradle = "8.9.0"
 kotlin = "2.1.0"
-libsignal-client = "0.79.0"
+libsignal-client = "0.79.1"
 mp4parser = "1.9.39"
 android-gradle-plugin = "8.7.2"
 accompanist = "0.28.0"
diff --git a/gradle/verification-metadata.xml b/gradle/verification-metadata.xml
index 6684fb185d..7d6e173c77 100644
--- a/gradle/verification-metadata.xml
+++ b/gradle/verification-metadata.xml
@@ -7670,20 +7670,20 @@ https://docs.gradle.org/current/userguide/dependency_verification.html
             <sha256 value="57b3cf8f247f1990211110734a7d1af413db145c8f17eb1b2cdc9b9321188c2b" origin="Generated by Gradle"/>
          </artifact>
       </component>
-      <component group="org.signal" name="libsignal-android" version="0.79.0">
-         <artifact name="libsignal-android-0.79.0.aar">
-            <sha256 value="3804b631b7ca571f5a6d8f84134a55e1460382744c3f9b273428a824e4cdc915" origin="Generated by Gradle"/>
+      <component group="org.signal" name="libsignal-android" version="0.79.1">
+         <artifact name="libsignal-android-0.79.1.aar">
+            <sha256 value="decf6f03cd83ee7b33ff2009ef4d8e6c9c0bb7b48cae33d4b5017b384dcc0dc4" origin="Generated by Gradle"/>
          </artifact>
-         <artifact name="libsignal-android-0.79.0.module">
-            <sha256 value="b3bc8c715894b18849edcd67030ce12f4fae7fa787c467e682d8145526bd13f8" origin="Generated by Gradle"/>
+         <artifact name="libsignal-android-0.79.1.module">
+            <sha256 value="8eaa6408981fd3e0ef7ea94974acc92c1a8ab0615e273216fe7240d653c59d07" origin="Generated by Gradle"/>
          </artifact>
       </component>
-      <component group="org.signal" name="libsignal-client" version="0.79.0">
-         <artifact name="libsignal-client-0.79.0.jar">
-            <sha256 value="cb3d25226228612916423612b6d8aa0d44822e5ea0e5d07aed320e8c1d5d5ad2" origin="Generated by Gradle"/>
+      <component group="org.signal" name="libsignal-client" version="0.79.1">
+         <artifact name="libsignal-client-0.79.1.jar">
+            <sha256 value="62262efceca569679f82a785ce46cf09a50f66764b90ed40e824ccb2733dded7" origin="Generated by Gradle"/>
          </artifact>
-         <artifact name="libsignal-client-0.79.0.module">
-            <sha256 value="2f94c9af5ba3128345d05c01478a3541ae011ab0bb39e391052d349852934083" origin="Generated by Gradle"/>
+         <artifact name="libsignal-client-0.79.1.module">
+            <sha256 value="f2eb9a2489a78e1a0c39b27876ebc12b19fe9d47c8d8f766ef44d5acecd314a2" origin="Generated by Gradle"/>
          </artifact>
       </component>
       <component group="org.signal" name="ringrtc-android" version="2.57.0">