diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index f94bb37..b881792 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -63,6 +63,15 @@ version = "1.0.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a4385e2e34eb35d6b3efe798b9eb88096925d87726c0798709bf56d9ed84af3"
 
+[[package]]
+name = "arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d036a3c4ab069c7b410a2ce876bd74808d2d0888a82667669f8e783a898bf1"
+dependencies = [
+ "derive_arbitrary",
+]
+
 [[package]]
 name = "argon2"
 version = "0.5.3"
@@ -795,6 +804,17 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "derive_arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e567bd82dcff979e4b03460c307b3cdc9e96fde3d73bed1496d2bc75d9dd62a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.118",
+]
+
 [[package]]
 name = "derive_more"
 version = "2.1.1"
@@ -928,7 +948,7 @@ dependencies = [
  "serde",
  "serde_json",
  "thiserror 2.0.18",
- "zip",
+ "zip 0.6.6",
 ]
 
 [[package]]
@@ -5925,7 +5945,7 @@ dependencies = [
 
 [[package]]
 name = "whispassist"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "argon2",
  "async-trait",
@@ -5958,6 +5978,7 @@ dependencies = [
  "whisper-rs",
  "windows 0.58.0",
  "zeroize",
+ "zip 2.4.2",
 ]
 
 [[package]]
@@ -6852,12 +6873,41 @@ dependencies = [
  "flate2",
 ]
 
+[[package]]
+name = "zip"
+version = "2.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fabe6324e908f85a1c52063ce7aa26b68dcb7eb6dbc83a2d148403c9bc3eba50"
+dependencies = [
+ "arbitrary",
+ "crc32fast",
+ "crossbeam-utils",
+ "displaydoc",
+ "flate2",
+ "indexmap 2.14.0",
+ "memchr",
+ "thiserror 2.0.18",
+ "zopfli",
+]
+
 [[package]]
 name = "zmij"
 version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
 
+[[package]]
+name = "zopfli"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f05cd8797d63865425ff89b5c4a48804f35ba0ce8d125800027ad6017d2b5249"
+dependencies = [
+ "bumpalo",
+ "crc32fast",
+ "log",
+ "simd-adler32",
+]
+
 [[package]]
 name = "zune-core"
 version = "0.5.1"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index bf016db..2ed239e 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -64,6 +64,7 @@ tauri-plugin-dialog = "2"                                   # native Save/choose
 # conversion service, consistent with the fully-local invariant.
 pulldown-cmark = "0.12"
 printpdf = "0.7"
+zip = { version = "2", default-features = false, features = ["deflate"] }    # unzip the on-demand NPU runtime bundle (T3.4)
 docx-rs = "0.4"
 
 [target.'cfg(windows)'.dependencies]