diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e2aa82e..902e1b9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,11 +14,11 @@ on:
 
 env:
   # See https://github.com/nodejs/release#release-schedule
-  # Node.js v20 EOL = 2026-04-30. v22 EOL = 2027-04-30. v23 EOL = 2025-06-01. v24 EOL = 2028-04-30. v25 EOL = 2026-06-01.
+  # Node.js v20 EOL = 2026-04-30. v22 EOL = 2027-04-30. v23 EOL = 2025-06-01. v24 EOL = 2028-04-30. v25 EOL = 2026-06-01. v26 EOL = TBD.
   # Node.js 20-24 can build with GCC 10 (bullseye)
   NODE_BUILD_CMD_LEGACY: npx --no-install prebuild -r node -t 20.0.0 -t 22.0.0 -t 23.0.0 -t 24.0.0 --include-regex '_sqlite3'
   # Node.js 25+ requires GCC 11+ for <source_location> header (bookworm)
-  NODE_BUILD_CMD_MODERN: npx --no-install prebuild -r node -t 25.0.0 --include-regex '_sqlite3'
+  NODE_BUILD_CMD_MODERN: npx --no-install prebuild -r node -t 25.0.0 -t 26.0.0 --include-regex '_sqlite3'
 
 jobs:
   test:
@@ -33,6 +33,17 @@ jobs:
         node:
           - 22
           - 24
+          - 26
+        # Node 26 on Windows can't build: Node 26's bundled gyp config feeds
+        # Clang/LLD ThinLTO flags (-flto=thin, /opt:lldltojobs) into the MSVC link
+        # step, which link.exe rejects (LNK1117). Upstream Node 26 + MSVC toolchain
+        # bug -- our build sets no LTO flags, and Node <=25 on Windows is fine.
+        # Revisit when the upstream toolchain is fixed. (Node 26 prebuilds still
+        # ship for macOS/Linux via NODE_BUILD_CMD_MODERN; the release-time Windows
+        # prebuild will need the same exclusion before it builds Node 26.)
+        exclude:
+          - os: windows-2022
+            node: 26
     name: Testing Node ${{ matrix.node }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/deps/defines.gypi b/deps/defines.gypi
index 74bc09d..3e74349 100644
--- a/deps/defines.gypi
+++ b/deps/defines.gypi
@@ -25,6 +25,7 @@
     'SQLITE_ENABLE_GEOPOLY',
     'SQLITE_ENABLE_JSON1',
     'SQLITE_ENABLE_MATH_FUNCTIONS',
+    'SQLITE_ENABLE_PERCENTILE',
     'SQLITE_ENABLE_RTREE',
     'SQLITE_ENABLE_STAT4',
     'SQLITE_ENABLE_STMT_SCANSTATUS',
diff --git a/deps/download.sh b/deps/download.sh
index 33b5496..da46cc2 100755
--- a/deps/download.sh
+++ b/deps/download.sh
@@ -45,6 +45,7 @@ SQLITE_ENABLE_FTS5
 SQLITE_ENABLE_GEOPOLY
 SQLITE_ENABLE_JSON1
 SQLITE_ENABLE_MATH_FUNCTIONS
+SQLITE_ENABLE_PERCENTILE
 SQLITE_ENABLE_RTREE
 SQLITE_ENABLE_STAT4
 SQLITE_ENABLE_STMT_SCANSTATUS
diff --git a/docs/compilation.md b/docs/compilation.md
index 9b53092..6ff6c55 100644
--- a/docs/compilation.md
+++ b/docs/compilation.md
@@ -70,6 +70,7 @@ SQLITE_ENABLE_FTS5
 SQLITE_ENABLE_GEOPOLY
 SQLITE_ENABLE_JSON1
 SQLITE_ENABLE_MATH_FUNCTIONS
+SQLITE_ENABLE_PERCENTILE
 SQLITE_ENABLE_RTREE
 SQLITE_ENABLE_STAT4
 SQLITE_ENABLE_STMT_SCANSTATUS
diff --git a/package.json b/package.json
index 646d39d..65640a0 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "chai": "^4.3.8",
     "cli-color": "^2.0.3",
     "fs-extra": "^11.1.1",
-    "mocha": "^10.2.0",
+    "mocha": "^11.7.5",
     "nodemark": "^0.3.0",
     "prebuild": "^13.0.1",
     "sqlite": "^5.0.1",