diff --git a/Cargo.lock b/Cargo.lock
index be42d46..446c577 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -100,7 +100,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -111,14 +111,14 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
 name = "anyhow"
-version = "1.0.101"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f0e0fee31ef5ed1ba1316088939cea399010ed7731dba877ed44aeb407a75ea"
+checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"
 
 [[package]]
 name = "arbitrary"
@@ -290,6 +290,15 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "block-buffer"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2f6c7dbe95a6ed67ad9f18e57daf93a2f034c524b99fd2b76d18fdfeb6660aa"
+dependencies = [
+ "hybrid-array",
+]
+
 [[package]]
 name = "bon"
 version = "3.9.3"
@@ -471,6 +480,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a822ea5bc7590f9d40f1ba12c0dc3c2760f3482c6984db1573ad11031420831"
 
+[[package]]
+name = "cmov"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c9ea0ac24bc397ab3c98583a3c9ba74fa56b09a4449bbe172b9b1ddb016027a"
+
 [[package]]
 name = "code-memory"
 version = "0.1.1"
@@ -489,7 +504,7 @@ dependencies = [
  "reqwest",
  "serde",
  "serde_json",
- "sha2",
+ "sha2 0.10.9",
  "tantivy",
  "tempfile",
  "thiserror",
@@ -548,6 +563,12 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "const-oid"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6ef517f0926dd24a1582492c791b6a4818a4d94e789a334894aa15b0d12f55c"
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -631,9 +652,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-epoch"
-version = "0.9.18"
+version = "0.9.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e"
+checksum = "2d6914041f254d6e9176c01941b21115dcfb7089e55135a35411081bd106ef3f"
 dependencies = [
  "crossbeam-utils",
 ]
@@ -660,6 +681,24 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "crypto-common"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce6e4c961d6cd6c9a86db418387425e8bdeaf05b3c8bc1411e6dca4c252f1453"
+dependencies = [
+ "hybrid-array",
+]
+
+[[package]]
+name = "ctutils"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d5515a3834141de9eafb9717ad39eea8247b5674e6066c404e8c4b365d2a29e"
+dependencies = [
+ "cmov",
+]
+
 [[package]]
 name = "darling"
 version = "0.20.11"
@@ -706,9 +745,9 @@ dependencies = [
 
 [[package]]
 name = "datasketches"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c286de4e81ea2590afc24d754e0f83810c566f50a1388fa75ebd57928c0d9745"
+checksum = "46c4cf71a36b46dcfc00e5014c0c20ccad2b1b6a008304d7d57d2749b2d41b3d"
 
 [[package]]
 name = "deranged"
@@ -757,9 +796,20 @@ version = "0.10.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
- "block-buffer",
- "crypto-common",
- "subtle",
+ "block-buffer 0.10.4",
+ "crypto-common 0.1.7",
+]
+
+[[package]]
+name = "digest"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1dd6dbb5841937940781866fa1281a1ff7bd3bf827091440879f9994983d5c2"
+dependencies = [
+ "block-buffer 0.12.1",
+ "const-oid",
+ "crypto-common 0.2.2",
+ "ctutils",
 ]
 
 [[package]]
@@ -780,7 +830,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -865,7 +915,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -1171,17 +1221,14 @@ dependencies = [
 
 [[package]]
 name = "git2"
-version = "0.20.4"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b88256088d75a56f8ecfa070513a775dd9107f6530ef14919dac831af9cfe2b"
+checksum = "ddddbf932745a6be37109b6112d3ee09696106f848449069d3a57bba937ab82e"
 dependencies = [
  "bitflags 2.11.0",
  "libc",
  "libgit2-sys",
  "log",
- "openssl-probe 0.1.6",
- "openssl-sys",
- "url",
 ]
 
 [[package]]
@@ -1199,9 +1246,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.4.13"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f44da3a8150a6703ed5d34e164b875fd14c2cdab9af1252a9a1020bde2bdc54"
+checksum = "839c0e8a181239723652be9062bb56ca5bf5f64011f73b623f6f4fc59086a228"
 dependencies = [
  "atomic-waker",
  "bytes",
@@ -1241,6 +1288,12 @@ name = "hashbrown"
 version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
+
+[[package]]
+name = "hashbrown"
+version = "0.17.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed5909b6e89a2db4456e54cd5f673791d7eca6732202bbf2a9cc504fe2f9b84a"
 dependencies = [
  "allocator-api2",
  "equivalent",
@@ -1282,11 +1335,11 @@ dependencies = [
 
 [[package]]
 name = "hmac"
-version = "0.12.1"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
+checksum = "6303bc9732ae41b04cb554b844a762b4115a61bfaa81e3e83050991eeb56863f"
 dependencies = [
- "digest",
+ "digest 0.11.3",
 ]
 
 [[package]]
@@ -1340,6 +1393,15 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
 
+[[package]]
+name = "hybrid-array"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "707114b52a152fa7bdb290cd7cd5912d9467273b6d74e21b8d81aca1f8533f6b"
+dependencies = [
+ "typenum",
+]
+
 [[package]]
 name = "hyper"
 version = "1.8.1"
@@ -1813,9 +1875,7 @@ checksum = "23c7391e4b9f4ffab1a624223cc1d7385ff9a678f490768add717de7ea2f4d89"
 dependencies = [
  "cc",
  "libc",
- "libssh2-sys",
  "libz-sys",
- "openssl-sys",
  "pkg-config",
 ]
 
@@ -1830,20 +1890,6 @@ dependencies = [
  "redox_syscall 0.7.1",
 ]
 
-[[package]]
-name = "libssh2-sys"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "220e4f05ad4a218192533b300327f5150e809b54c4ec83b5a1d91833601811b9"
-dependencies = [
- "cc",
- "libc",
- "libz-sys",
- "openssl-sys",
- "pkg-config",
- "vcpkg",
-]
-
 [[package]]
 name = "libz-sys"
 version = "1.1.23"
@@ -1894,11 +1940,11 @@ dependencies = [
 
 [[package]]
 name = "lru"
-version = "0.16.3"
+version = "0.18.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1dc47f592c06f33f8e3aea9591776ec7c9f9e4124778ff8a3c3b87159f7e593"
+checksum = "5d2f2f9b4ba7e6b24d95e7e899329d35be83bcded72c8540cdd5368932d1d90a"
 dependencies = [
- "hashbrown 0.16.1",
+ "hashbrown 0.17.1",
 ]
 
 [[package]]
@@ -1909,9 +1955,9 @@ checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"
 
 [[package]]
 name = "lz4_flex"
-version = "0.13.1"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ef0d4ed8669f8f8826eb00dc878084aa8f253506c4fd5e8f58f5bce72ddb97e"
+checksum = "ecbdfe44b1bd960b68170b417450a628c43f7cf56bb3c5317e61cb230ee7f226"
 
 [[package]]
 name = "macro_rules_attribute"
@@ -1960,12 +2006,12 @@ dependencies = [
 
 [[package]]
 name = "md-5"
-version = "0.10.6"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d89e7ee0cfbedfc4da3340218492196241d89eefb6dab27de5df917a6d2e78cf"
+checksum = "69b6441f590336821bb897fb28fc622898ccceb1d6cea3fde5ea86b090c4de98"
 dependencies = [
  "cfg-if",
- "digest",
+ "digest 0.11.3",
 ]
 
 [[package]]
@@ -1985,9 +2031,9 @@ checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
 
 [[package]]
 name = "memmap2"
-version = "0.9.10"
+version = "0.9.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "714098028fe011992e1c3962653c96b2d578c4b4bce9036e15ff220319b1e0e3"
+checksum = "d1219ed1b7f229ee7104d281dd01d6802fe28bb6e95d292942c4daacdeb798c0"
 dependencies = [
  "libc",
 ]
@@ -2060,9 +2106,9 @@ dependencies = [
 
 [[package]]
 name = "murmurhash32"
-version = "0.3.1"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2195bf6aa996a481483b29d62a7663eed3fe39600c460e323f8ff41e90bdd89b"
+checksum = "a8afc6df942f4c022d70c5725e18df1a705773870e5b7f96fde94ca0334ce77a"
 
 [[package]]
 name = "native-tls"
@@ -2073,7 +2119,7 @@ dependencies = [
  "libc",
  "log",
  "openssl",
- "openssl-probe 0.2.1",
+ "openssl-probe",
  "openssl-sys",
  "schannel",
  "security-framework",
@@ -2161,7 +2207,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -2318,12 +2364,6 @@ dependencies = [
  "syn 2.0.116",
 ]
 
-[[package]]
-name = "openssl-probe"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d05e27ee213611ffe7d6348b942e8f942b37114c00cc03cec254295a4a17852e"
-
 [[package]]
 name = "openssl-probe"
 version = "0.2.1"
@@ -2376,7 +2416,7 @@ checksum = "c41d7757331aef2d04b9cb09b45583a59217628beaf91895b7e76187b6e8c088"
 dependencies = [
  "flate2",
  "pkg-config",
- "sha2",
+ "sha2 0.10.9",
  "tar",
  "ureq",
 ]
@@ -2384,8 +2424,7 @@ dependencies = [
 [[package]]
 name = "ownedbytes"
 version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fbd56f7631767e61784dc43f8580f403f4475bd4aaa4da003e6295e1bab4a7e"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "stable_deref_trait",
 ]
@@ -2508,9 +2547,9 @@ dependencies = [
 
 [[package]]
 name = "postgres-protocol"
-version = "0.6.10"
+version = "0.6.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ee9dd5fe15055d2b6806f4736aa0c9637217074e224bbec46d4041b91bb9491"
+checksum = "08808e3c483c46e999108051c78334f473d5adb59d78bb80a1268c7e6aa6c514"
 dependencies = [
  "base64 0.22.1",
  "byteorder",
@@ -2519,16 +2558,16 @@ dependencies = [
  "hmac",
  "md-5",
  "memchr",
- "rand 0.9.3",
- "sha2",
+ "rand 0.10.2",
+ "sha2 0.11.0",
  "stringprep",
 ]
 
 [[package]]
 name = "postgres-types"
-version = "0.2.12"
+version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54b858f82211e84682fecd373f68e1ceae642d8d751a1ebd13f33de6257b3e20"
+checksum = "851ca9db4932932d69f3ea811b1abe63087a0f740a47692619dd40d4899b68be"
 dependencies = [
  "bytes",
  "chrono",
@@ -2989,7 +3028,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.61.2",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -3165,7 +3204,18 @@ checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
 dependencies = [
  "cfg-if",
  "cpufeatures 0.2.17",
- "digest",
+ "digest 0.10.7",
+]
+
+[[package]]
+name = "sha2"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "446ba717509524cb3f22f17ecc096f10f4822d76ab5c0b9822c5f9c284e825f4"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.3.0",
+ "digest 0.11.3",
 ]
 
 [[package]]
@@ -3374,9 +3424,8 @@ dependencies = [
 
 [[package]]
 name = "tantivy"
-version = "0.26.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "edde6a10743fff00a4e1a8c9ef020bf5f3cbad301b7d2d39f2b07f123c4eac07"
+version = "0.27.0"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "aho-corasick",
  "arc-swap",
@@ -3421,6 +3470,7 @@ dependencies = [
  "thiserror",
  "time",
  "typetag",
+ "unwrap-infallible",
  "uuid",
  "winapi",
 ]
@@ -3428,8 +3478,7 @@ dependencies = [
 [[package]]
 name = "tantivy-bitpacker"
 version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fed3d674429bcd2de5d0a6d1aa5495fed8afd9c5ecce993019caf7615f53fa4"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "bitpacking",
 ]
@@ -3437,8 +3486,7 @@ dependencies = [
 [[package]]
 name = "tantivy-columnar"
 version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c57166f5bcfd478f370ab8445afb4678dce44801fa5ce5c451aaf8595583c5dc"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "downcast-rs",
  "fastdivide",
@@ -3453,8 +3501,7 @@ dependencies = [
 [[package]]
 name = "tantivy-common"
 version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbf10915aa75da3c3b0d58b58853d2e889efbaf32d4982a4c3715dde6bba23e5"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "async-trait",
  "byteorder",
@@ -3477,8 +3524,7 @@ dependencies = [
 [[package]]
 name = "tantivy-query-grammar"
 version = "0.26.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dfadb8526b6da90704feb293b0701a6aae62ea14983143344be2dc5ce30f1d82"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "fnv",
  "nom 7.1.3",
@@ -3490,8 +3536,7 @@ dependencies = [
 [[package]]
 name = "tantivy-sstable"
 version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a2cfc3ac5164cbadc28965ffb145a8f47582a60ae5897859ad8d4316596c606"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "futures-util",
  "itertools",
@@ -3504,8 +3549,7 @@ dependencies = [
 [[package]]
 name = "tantivy-stacker"
 version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6cbb051742da9d53ca9e8fff43a9b10e319338b24e2c0e15d0372df19ffeb951"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "murmurhash32",
  "tantivy-common",
@@ -3514,8 +3558,7 @@ dependencies = [
 [[package]]
 name = "tantivy-tokenizer-api"
 version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eac258c2c6390673f2685813afeeafcb8c4e0ee7de8dd3fc46838dcc37263f98"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=5ca39332002c2c87fb5d2abc707cf527b3319d42#5ca39332002c2c87fb5d2abc707cf527b3319d42"
 dependencies = [
  "serde",
 ]
@@ -3541,7 +3584,7 @@ dependencies = [
  "getrandom 0.4.1",
  "once_cell",
  "rustix",
- "windows-sys 0.61.2",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -3728,9 +3771,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-postgres"
-version = "0.7.16"
+version = "0.7.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcea47c8f71744367793f16c2db1f11cb859d28f436bdb4ca9193eb1f787ee42"
+checksum = "a528f7d280f6d5b9cd149635c8705b0dd049754bc67d81d31fa25169a93809d3"
 dependencies = [
  "async-trait",
  "byteorder",
@@ -3745,7 +3788,7 @@ dependencies = [
  "pin-project-lite",
  "postgres-protocol",
  "postgres-types",
- "rand 0.9.3",
+ "rand 0.10.2",
  "socket2",
  "tokio",
  "tokio-util",
@@ -4006,9 +4049,9 @@ checksum = "bc7d623258602320d5c55d1bc22793b57daff0ec7efc270ea7d55ce1d5f5471c"
 
 [[package]]
 name = "typenum"
-version = "1.19.0"
+version = "1.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "562d481066bde0658276a35467c4af00bdc6ee726305698a55b86e61d7ad82bb"
+checksum = "b6f5e870be6c3b371b77fe0ee0bafb859fa4964b4404c27de1d380043c4dda20"
 
 [[package]]
 name = "typetag"
@@ -4100,6 +4143,12 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
+[[package]]
+name = "unwrap-infallible"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e497bb1f828cc9fb236722c2eaa100dcf201563f38f4da6252357a59037adf31"
+
 [[package]]
 name = "ureq"
 version = "2.12.1"
@@ -4437,7 +4486,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index cdd1a6e..8926ad6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,13 +17,13 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 
 # Full-text search
-tantivy = "0.26.1"
+tantivy = { version = "0.27.0", git = "https://github.com/quickwit-oss/tantivy", rev = "5ca39332002c2c87fb5d2abc707cf527b3319d42" }
 
 # Embeddings (local, no API)
 fastembed = "4"
 
 # Git integration
-git2 = "0.20"
+git2 = "0.21"
 
 # Dependency graphs
 petgraph = "0.6"
diff --git a/src/git/history.rs b/src/git/history.rs
index 5558527..87c9e8c 100644
--- a/src/git/history.rs
+++ b/src/git/history.rs
@@ -42,6 +42,15 @@ pub struct GitHistory {
     extractor: DecisionExtractor,
 }
 
+fn blame_signature_details(
+    signature: Option<git2::Signature<'_>>,
+) -> Result<(String, i64), git2::Error> {
+    let signature = signature
+        .ok_or_else(|| git2::Error::from_str("blame hunk is missing its final signature"))?;
+    let author = signature.name().unwrap_or("unknown").to_string();
+    Ok((author, signature.when().seconds()))
+}
+
 impl GitHistory {
     /// Open a repository at the given path.
     pub fn open(repo_path: &Path) -> Result<Self, git2::Error> {
@@ -252,10 +261,8 @@ impl GitHistory {
         let mut result = Vec::new();
 
         for hunk in blame.iter() {
-            let sig = hunk.final_signature();
-            let author = sig.name().unwrap_or("unknown").to_string();
+            let (author, timestamp) = blame_signature_details(hunk.final_signature())?;
             let commit_id = hunk.final_commit_id().to_string();
-            let timestamp = sig.when().seconds();
             result.push((author, commit_id, timestamp));
         }
 
@@ -384,4 +391,9 @@ mod tests {
         let freq = git.file_change_frequency(100).unwrap();
         assert_eq!(freq.get("test.rs"), Some(&1));
     }
+
+    #[test]
+    fn test_missing_blame_signature_returns_error() {
+        assert!(blame_signature_details(None).is_err());
+    }
 }