diff --git a/Package.swift b/Package.swift
index 7e093c1..e519d70 100644
--- a/Package.swift
+++ b/Package.swift
@@ -9,8 +9,8 @@ let package = Package(
     products: [.library(name: "DunneAudioKit", targets: ["DunneAudioKit"])],
     dependencies: [
         .package(url: "https://github.com/AudioKit/KissFFT", from: "1.0.0"),
-        .package(url: "https://github.com/AudioKit/AudioKit", from: "5.5.0"),
-        .package(url: "https://github.com/AudioKit/AudioKitEX", from: "5.5.0"),
+        .package(url: "https://github.com/AudioKit/AudioKit", from: "5.6.0"),
+        .package(url: "https://github.com/AudioKit/AudioKitEX", from: "5.6.0"),
     ],
     targets: [
         .target(name: "DunneAudioKit", dependencies: ["AudioKit", "AudioKitEX", "CDunneAudioKit"]),
diff --git a/Sources/CDunneAudioKit/DunneCore/Common/EnvelopeGeneratorBase.cpp b/Sources/CDunneAudioKit/DunneCore/Common/EnvelopeGeneratorBase.cpp
index f27ac74..4d9003c 100644
--- a/Sources/CDunneAudioKit/DunneCore/Common/EnvelopeGeneratorBase.cpp
+++ b/Sources/CDunneAudioKit/DunneCore/Common/EnvelopeGeneratorBase.cpp
@@ -2,6 +2,7 @@
 
 #include "EnvelopeGeneratorBase.h"
 #include <cmath>
+#include <cassert>
 
 namespace DunneCore
 {
diff --git a/Sources/CDunneAudioKit/DunneCore/Synth/WaveStack.cpp b/Sources/CDunneAudioKit/DunneCore/Synth/WaveStack.cpp
index 4ef3eca..ae2a9e5 100644
--- a/Sources/CDunneAudioKit/DunneCore/Synth/WaveStack.cpp
+++ b/Sources/CDunneAudioKit/DunneCore/Synth/WaveStack.cpp
@@ -2,6 +2,7 @@
 
 #include "WaveStack.h"
 #include "kiss_fftr.h"
+#include <cassert>
 
 namespace DunneCore
 {
diff --git a/Tests/DunneAudioKitTests/GenericNodeTests.swift b/Tests/DunneAudioKitTests/GenericNodeTests.swift
index 78c6117..ba36c62 100644
--- a/Tests/DunneAudioKitTests/GenericNodeTests.swift
+++ b/Tests/DunneAudioKitTests/GenericNodeTests.swift
@@ -55,7 +55,7 @@ class GenericNodeTests: XCTestCase {
     }
 
     func testEffects() {
-        nodeParameterTest(md5: "1f023474b6150286e854485f00a0d1b4", factory: { input in Flanger(input) })
+        nodeParameterTest(md5: "b09c41cdef96fb4cfe89c34c5262e9d2", factory: { input in Flanger(input) })
         nodeParameterTest(md5: "2d667d22162edd87d6ae8ec8bfccc77e", factory: { input in StereoDelay(input) })
     }
 }
diff --git a/Tests/DunneAudioKitTests/ValidatedMD5s.swift b/Tests/DunneAudioKitTests/ValidatedMD5s.swift
index db55378..0d90015 100644
--- a/Tests/DunneAudioKitTests/ValidatedMD5s.swift
+++ b/Tests/DunneAudioKitTests/ValidatedMD5s.swift
@@ -13,9 +13,9 @@ extension XCTestCase {
 let validatedMD5s: [String: String] = [
     "-[SamplerTests testSampler]": "8739229f6bc52fa5db3cc2afe85ee580",
     "-[SamplerTests testSamplerAttackVolumeEnvelope]": "bf00177ac48148fa4f780e5e364e84e2",
-    "-[SynthTests testChord]": "155d8175419836512ead0794f551c7a0",
-    "-[SynthTests testMonophonicPlayback]": "77fb882efcaf29c3a426036d85d04090",
-    "-[SynthTests testParameterInitialization]": "e27794e7055b8ebdbf7d0591e980484e",
+    "-[SynthTests testChord]": "670c95beba121ff85150eb12497f3652",
+    "-[SynthTests testMonophonicPlayback]": "625554cfe7cc840083df9931d47490a6",
+    "-[SynthTests testParameterInitialization]": "7bd35b742ceff0ba77238d7da2ef046d",
     "-[TransientShaperTests testAttackAmount]": "481068b77fc73b349315f2327fb84318",
     "-[TransientShaperTests testDefault]": "cea9fc1deb7a77fe47a071d7aaf411d3",
     "-[TransientShaperTests testOutputAmount]": "e84963aeedd6268dd648dd6a862fb76a",