diff --git a/pkgs/by-name/ne/net-cpp/package.nix b/pkgs/by-name/ne/net-cpp/package.nix
index 16fe04ccd5c2..fedb695fc245 100644
--- a/pkgs/by-name/ne/net-cpp/package.nix
+++ b/pkgs/by-name/ne/net-cpp/package.nix
@@ -5,7 +5,8 @@
   fetchpatch,
   gitUpdater,
   testers,
-  boost,
+  # https://gitlab.com/ubports/development/core/lib-cpp/net-cpp/-/issues/5
+  boost186,
   cmake,
   curl,
   doxygen,
@@ -50,11 +51,18 @@ stdenv.mkDerivation (finalAttrs: {
       url = "https://salsa.debian.org/ubports-team/net-cpp/-/raw/941d9eceaa66a06eabb1eb79554548b47d4a60ab/debian/patches/1007_wait-for-flask.patch";
       hash = "sha256-nsGkZBuqahsg70PLUxn5EluDjmfZ0/wSnOYimfAI4ag=";
     })
+
     # Bump std version to 14 for gtest 1.13+
     (fetchpatch {
       url = "https://salsa.debian.org/ubports-team/net-cpp/-/raw/f3a031eb7e4ce7df00781100f16de58a4709afcb/debian/patches/0001-Bump-std-version-to-14-needed-for-googletest-1.13.0.patch";
       hash = "sha256-3ykqCfZjtTx7zWQ5rkMhVp7D5fkpoCjl0CVFwwEd4U4=";
     })
+
+    # Fix newer flask rejecting large chunks by default
+    (fetchpatch {
+      url = "https://salsa.debian.org/ubports-team/net-cpp/-/raw/f2050b5318cba3860fa1042e9b81e1b792b972c4/debian/patches/1008_set-MAX-CONTENT-LENGTH-for-flask-server-to-let-it-accept-big-chunks-of-data.patch";
+      hash = "sha256-lfMRjpmysrhzdG6OOSpBGvYJCi1hrERI/SRf+rAakbA=";
+    })
   ];
 
   postPatch = lib.optionalString finalAttrs.finalPackage.doCheck ''
@@ -73,7 +81,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   buildInputs = [
-    boost
+    boost186
     curl
   ];
 
diff --git a/pkgs/desktops/lomiri/services/biometryd/default.nix b/pkgs/desktops/lomiri/services/biometryd/default.nix
index 3c590f7d2bf5..0636f116e452 100644
--- a/pkgs/desktops/lomiri/services/biometryd/default.nix
+++ b/pkgs/desktops/lomiri/services/biometryd/default.nix
@@ -4,7 +4,7 @@
   fetchFromGitLab,
   gitUpdater,
   testers,
-  # Pin Boost 1.86 due to use of boost::asio::io_service.
+  # https://gitlab.com/ubports/development/core/biometryd/-/issues/8
   boost186,
   cmake,
   cmake-extras,