diff --git a/.cargo/config.in b/.cargo/config.in
index c8ff48b1e308..cee9c57c18e4 100644
--- a/.cargo/config.in
+++ b/.cargo/config.in
@@ -25,7 +25,7 @@ rev = "3bfc47d9a571d0842676043ba60716318e946c06"
 [source."https://github.com/mozilla/midir.git"]
 git = "https://github.com/mozilla/midir.git"
 replace-with = "vendored-sources"
-rev = "4c11f0ffb5d6a10de4aff40a7b81218b33b94e6f"
+rev = "e1b4dcb767f9e69afe95a860374aaa9635d81e3d"
 
 [source."https://github.com/mozilla/cubeb-pulse-rs"]
 git = "https://github.com/mozilla/cubeb-pulse-rs"
diff --git a/Cargo.lock b/Cargo.lock
index 8fcee6a2af91..c60c83ec2992 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3291,7 +3291,7 @@ dependencies = [
 [[package]]
 name = "midir"
 version = "0.7.0"
-source = "git+https://github.com/mozilla/midir.git?rev=4c11f0ffb5d6a10de4aff40a7b81218b33b94e6f#4c11f0ffb5d6a10de4aff40a7b81218b33b94e6f"
+source = "git+https://github.com/mozilla/midir.git?rev=e1b4dcb767f9e69afe95a860374aaa9635d81e3d#e1b4dcb767f9e69afe95a860374aaa9635d81e3d"
 dependencies = [
  "alsa",
  "bitflags",
diff --git a/Cargo.toml b/Cargo.toml
index 012a938b13f9..4b452199a5a9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -146,7 +146,7 @@ coremidi = { git = "https://github.com/chris-zen/coremidi.git", rev="fc68464b544
 fog = { path = "toolkit/components/glean/api" }
 libudev-sys = { path = "dom/webauthn/libudev-sys" }
 packed_simd = { package = "packed_simd_2", git = "https://github.com/hsivonen/packed_simd", rev="c149d0a519bf878567c7630096737669ec2ff15f" }
-midir = { git = "https://github.com/mozilla/midir.git", rev = "4c11f0ffb5d6a10de4aff40a7b81218b33b94e6f" }
+midir = { git = "https://github.com/mozilla/midir.git", rev = "e1b4dcb767f9e69afe95a860374aaa9635d81e3d" }
 minidump_writer_linux = { git = "https://github.com/rust-minidump/minidump-writer.git", rev = "75ada456c92a429704691a85e1cb42fef8cafc0d" }
 
 # application-services overrides to make updating them all simpler.
diff --git a/third_party/rust/midir/.cargo-checksum.json b/third_party/rust/midir/.cargo-checksum.json
index 390b25b1e011..74ca824e310b 100644
--- a/third_party/rust/midir/.cargo-checksum.json
+++ b/third_party/rust/midir/.cargo-checksum.json
@@ -1 +1 @@
-{"files":{"CHANGELOG.md":"10db6f8dbb1c5566e75f2eeda6b2ee8bb44fe4a76f57e0bfb98c62f7f8c04f89","Cargo.toml":"41aa086ea813af75458515ff515917bb48d20eaef42a74352ea12ff8d5d16bce","LICENSE":"6fe6f623b1fa80e90679aee2f917d8978a184988ebb995ebc254cc9633903cac","README.md":"4131b953217e77a4463fde307ba3262b4df11732c1ff209668df12dff3c73ffc","azure-pipelines-template.yml":"c787791a94e654226a299aaa875fcc48f6eedf4dae631855cb5a7067891dbe3a","azure-pipelines.yml":"1b4fab0afacc66732a385cb6e5b213c170fc9717219a03ccda9c5db78cd461dd","examples/test_forward.rs":"6cb060aba7e8c39eaf53ea95a72d4c7939ffb4bebc82c291135fdc35495078ce","examples/test_list_ports.rs":"41ba21ab1e56d76206abc8b291d27050cb1a788372f00f6761c78f03fb5981ff","examples/test_play.rs":"22630e46af9628d8193ad8e19ff095ad02542b7ab697be4e513da78210ad5c0c","examples/test_read_input.rs":"4901f18435c3f8021750ccd4687abe92194ab38f1e7721896a6a31f6650d524c","examples/test_reuse.rs":"fdb3b430aec42c7c648fbecf22e6c726ef8a20638936a1a70fb373dff94c0632","examples/test_sysex.rs":"ea06427a644c3639f1c49271be5d16c9d3890d3741eb6ebf2ff64d2f7fd36e96","src/backend/alsa/mod.rs":"6bc784435247c3302bf12c3f558b6027abfbec997a280baa113c7344e5b0479f","src/backend/coremidi/mod.rs":"f827cbc5db7086ea58c5927213a2c3e0246244d5939c2ba0ff787caae7089511","src/backend/jack/mod.rs":"8f2eace3e9046ec6de8c7fc37d3502d2b971a73fe2a96e5c2a423d51445f1505","src/backend/jack/wrappers.rs":"f18718f234e41c91bb5463546fbbe61be64e9581a4fae6ef2de20cafae487298","src/backend/mod.rs":"1a8106889ecd053af27b3a72515bfb286da1b08bb90909fa6d4e7b816b50c447","src/backend/webmidi/mod.rs":"4af5b288833ee99f047a638b368eca293f89356f1e82147c9a9c1633d950955d","src/backend/winmm/handler.rs":"45b36067fd280a38943f385d3d7f6885d7448153f53e9c8f66b58b484535ad1c","src/backend/winmm/mod.rs":"94d8c57fd2d327993d01ef06d8c68190c528fe52dd39e6b97c88d9f1f0afa753","src/backend/winrt/mod.rs":"ca7ac4ac310e7f6a6c28dd6374bfe97b38ed8656c7ca343494264cce45f93ae6","src/common.rs":"2cab2e987428522ca601544b516b64b858859730fbd1be0e53c828e82025319d","src/errors.rs":"495ba80f9dcfeefd343b460b74549b12cb1825c3e1b315848f859d0b4d66ddbe","src/lib.rs":"ecde030ca02a90a99577cd71446857a2c00aee8ff1bc7890c54a5d0d22d2be2c","src/os/mod.rs":"507dfa95e57805c489a883dcf9efddcb718d5178267f296294f72b3c397c12c7","src/os/unix.rs":"a1977659d270fcf31111d4446b949d2760d76e2077639e6008d634800861b77b","tests/virtual.rs":"b47501eeb313f3e255d2d1888c333ff994d958865272929fe7bf116be45b6805"},"package":null}
\ No newline at end of file
+{"files":{"CHANGELOG.md":"10db6f8dbb1c5566e75f2eeda6b2ee8bb44fe4a76f57e0bfb98c62f7f8c04f89","Cargo.toml":"41aa086ea813af75458515ff515917bb48d20eaef42a74352ea12ff8d5d16bce","LICENSE":"6fe6f623b1fa80e90679aee2f917d8978a184988ebb995ebc254cc9633903cac","README.md":"4131b953217e77a4463fde307ba3262b4df11732c1ff209668df12dff3c73ffc","azure-pipelines-template.yml":"c787791a94e654226a299aaa875fcc48f6eedf4dae631855cb5a7067891dbe3a","azure-pipelines.yml":"1b4fab0afacc66732a385cb6e5b213c170fc9717219a03ccda9c5db78cd461dd","examples/test_forward.rs":"6cb060aba7e8c39eaf53ea95a72d4c7939ffb4bebc82c291135fdc35495078ce","examples/test_list_ports.rs":"41ba21ab1e56d76206abc8b291d27050cb1a788372f00f6761c78f03fb5981ff","examples/test_play.rs":"22630e46af9628d8193ad8e19ff095ad02542b7ab697be4e513da78210ad5c0c","examples/test_read_input.rs":"4901f18435c3f8021750ccd4687abe92194ab38f1e7721896a6a31f6650d524c","examples/test_reuse.rs":"fdb3b430aec42c7c648fbecf22e6c726ef8a20638936a1a70fb373dff94c0632","examples/test_sysex.rs":"ea06427a644c3639f1c49271be5d16c9d3890d3741eb6ebf2ff64d2f7fd36e96","src/backend/alsa/mod.rs":"6bc784435247c3302bf12c3f558b6027abfbec997a280baa113c7344e5b0479f","src/backend/coremidi/mod.rs":"f827cbc5db7086ea58c5927213a2c3e0246244d5939c2ba0ff787caae7089511","src/backend/jack/mod.rs":"8f2eace3e9046ec6de8c7fc37d3502d2b971a73fe2a96e5c2a423d51445f1505","src/backend/jack/wrappers.rs":"f18718f234e41c91bb5463546fbbe61be64e9581a4fae6ef2de20cafae487298","src/backend/mod.rs":"1a8106889ecd053af27b3a72515bfb286da1b08bb90909fa6d4e7b816b50c447","src/backend/webmidi/mod.rs":"4af5b288833ee99f047a638b368eca293f89356f1e82147c9a9c1633d950955d","src/backend/winmm/handler.rs":"45b36067fd280a38943f385d3d7f6885d7448153f53e9c8f66b58b484535ad1c","src/backend/winmm/mod.rs":"d3d089e7d505dd66f596d7175ba6df2be4260e38f011009e5cbd5ace1de188d1","src/backend/winrt/mod.rs":"ca7ac4ac310e7f6a6c28dd6374bfe97b38ed8656c7ca343494264cce45f93ae6","src/common.rs":"2cab2e987428522ca601544b516b64b858859730fbd1be0e53c828e82025319d","src/errors.rs":"495ba80f9dcfeefd343b460b74549b12cb1825c3e1b315848f859d0b4d66ddbe","src/lib.rs":"ecde030ca02a90a99577cd71446857a2c00aee8ff1bc7890c54a5d0d22d2be2c","src/os/mod.rs":"507dfa95e57805c489a883dcf9efddcb718d5178267f296294f72b3c397c12c7","src/os/unix.rs":"a1977659d270fcf31111d4446b949d2760d76e2077639e6008d634800861b77b","tests/virtual.rs":"b47501eeb313f3e255d2d1888c333ff994d958865272929fe7bf116be45b6805"},"package":null}
\ No newline at end of file
diff --git a/third_party/rust/midir/src/backend/winmm/mod.rs b/third_party/rust/midir/src/backend/winmm/mod.rs
index 843587845930..2d20004ecedb 100644
--- a/third_party/rust/midir/src/backend/winmm/mod.rs
+++ b/third_party/rust/midir/src/backend/winmm/mod.rs
@@ -103,7 +103,7 @@ impl MidiInputPort {
             return Err(PortInfoError::CannotRetrievePortName)
         }
         let device_caps = unsafe { device_caps.assume_init() };
-        let pname: &[u16] = unsafe { &device_caps.szPname }; // requires unsafe because of packed alignment ...
+        let pname = device_caps.szPname;
         let output = from_wide_ptr(pname.as_ptr(), pname.len()).to_string_lossy().into_owned();
         Ok(output)
     }
@@ -365,7 +365,7 @@ impl MidiOutputPort {
             return Err(PortInfoError::CannotRetrievePortName)
         }
         let device_caps = unsafe { device_caps.assume_init() };
-        let pname: &[u16] = unsafe { &device_caps.szPname }; // requires unsafe because of packed alignment ...
+        let pname = device_caps.szPname;
         let output = from_wide_ptr(pname.as_ptr(), pname.len()).to_string_lossy().into_owned();
         Ok(output)
     }