diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c4030af..3f3a2fd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -39,11 +39,6 @@ jobs:
           wget -q https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz
           tar xf gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz
 
-      # Patch Synth_Dexed until the fix is merged upstream; see https://github.com/probonopd/MiniDexed/issues/889
-      - name: Patch Synth_Dexed
-        run: |
-          ( cd Synth_Dexed ; patch -p1 < ../src/patches/dx7note.patch )
-
       - name: Build for Raspberry Pi 5 (64-bit)
         run: |
           set -ex
@@ -129,11 +124,6 @@ jobs:
           wget -q https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-arm-none-eabi.tar.xz
           tar xf gcc-arm-10.3-2021.07-x86_64-arm-none-eabi.tar.xz
 
-      # Patch Synth_Dexed until the fix is merged upstream; see https://github.com/probonopd/MiniDexed/issues/889
-      - name: Patch Synth_Dexed
-        run: |
-          ( cd Synth_Dexed ; patch -p1 < ../src/patches/dx7note.patch )
-
       - name: Build for Raspberry Pi 2 (32-bit)
         run: |
           set -ex
diff --git a/src/patches/dx7note.patch b/src/patches/dx7note.patch
deleted file mode 100644
index a4a151c..0000000
--- a/src/patches/dx7note.patch
+++ /dev/null
@@ -1,81 +0,0 @@
-diff --git a/src/dx7note.cpp b/src/dx7note.cpp
-index b5ed6db..2a07836 100644
---- a/src/dx7note.cpp
-+++ b/src/dx7note.cpp
-@@ -184,11 +184,14 @@ void Dx7Note::init(const uint8_t patch[156], int midinote, int velocity, int src
-     int32_t freq = osc_freq(midinote, mode, coarse, fine, detune);
-     opMode[op] = mode;
-     basepitch_[op] = freq;
--    porta_curpitch_[op] = freq;
-     ampmodsens_[op] = ampmodsenstab[patch[off + 14] & 3];
- 
--    if (porta >= 0)
-+    // Always set porta_curpitch_ to basepitch_ if no portamento transition
-+    if (porta < 0 || porta >= 128 || srcnote == midinote) {
-+      porta_curpitch_[op] = freq;
-+    } else {
-       porta_curpitch_[op] = osc_freq(srcnote, mode, coarse, fine, detune);
-+    }
-   }
-   for (int i = 0; i < 4; i++) {
-     rates[i] = patch[126 + i];
-@@ -253,13 +256,17 @@ void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay, const Co
- 
-       int32_t basepitch = basepitch_[op];
- 
--      if ( opMode[op] )
-+      if (opMode[op]) {
-         params_[op].freq = Freqlut::lookup(basepitch + pitch_base);
--      else {
--        if ( porta_rateindex_ >= 0 ) {
--          basepitch = porta_curpitch_[op];
--          if ( porta_gliss_ )
--            basepitch = logfreq_round2semi(basepitch);
-+      } else {
-+        // If portamento is enabled but there is no transition, use basepitch_
-+        if (porta_rateindex_ >= 0) {
-+          if (porta_curpitch_[op] != basepitch_[op]) {
-+            basepitch = porta_curpitch_[op];
-+            if (porta_gliss_)
-+              basepitch = logfreq_round2semi(basepitch);
-+          }
-+          // else: no transition, use basepitch_ as is
-         }
-         params_[op].freq = Freqlut::lookup(basepitch + pitch_mod);
-       }
-@@ -280,7 +287,7 @@ void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay, const Co
- 
-   // ==== PORTAMENTO ====
-   int porta = porta_rateindex_;
--  if ( porta >= 0 ) {
-+  if (porta >= 0) {
-     int32_t rate = Porta::rates[porta];
-     for (int op = 0; op < 6; op++) {
-       int32_t cur = porta_curpitch_[op];
-@@ -289,7 +296,8 @@ void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay, const Co
-       bool going_up = cur < dst;
-       int32_t newpitch = cur + (going_up ? +rate : -rate);
- 
--      if ( going_up ? (cur > dst) : (cur < dst) )
-+      // Clamp to destination if we would overshoot/undershoot
-+      if ((going_up && newpitch > dst) || (!going_up && newpitch < dst))
-         newpitch = dst;
- 
-       porta_curpitch_[op] = newpitch;
-@@ -317,10 +325,15 @@ void Dx7Note::update(const uint8_t patch[156], int midinote, int velocity, int p
-     int detune = patch[off + 20];
-     int32_t freq = osc_freq(midinote, mode, coarse, fine, detune);
-     basepitch_[op] = freq;
--    porta_curpitch_[op] = freq;
-     ampmodsens_[op] = ampmodsenstab[patch[off + 14] & 3];
-     opMode[op] = mode;
- 
-+    // Always set porta_curpitch_ to basepitch_ if no portamento transition
-+    if (porta < 0 || porta >= 128) {
-+      porta_curpitch_[op] = freq;
-+    }
-+    // else: porta_curpitch_ will be handled by portamento logic
-+
-     for (int i = 0; i < 4; i++) {
-       rates[i] = patch[off + i];
-       levels[i] = patch[off + 4 + i];
diff --git a/submod.sh b/submod.sh
index 6ef767a..32408ef 100755
--- a/submod.sh
+++ b/submod.sh
@@ -23,5 +23,5 @@ cd -
 # Use fixed master branch of Synth_Dexed
 cd Synth_Dexed/
 git reset --hard
-git checkout 65d8383ad5 -f
+git checkout 2ad9e43095 -f
 cd -