diff --git a/.github/workflows/asan_unit_tests.yml b/.github/workflows/asan_unit_tests.yml
index 6e1a4b9d9e..5de1588c8a 100644
--- a/.github/workflows/asan_unit_tests.yml
+++ b/.github/workflows/asan_unit_tests.yml
@@ -15,6 +15,6 @@ jobs:
     - name: Run autotools / configure
       run: ./autogen.sh --enable-debug
     - name: Compile and link (make)
-      run: make -j8 CFLAGS="-Werror -Wall -fsanitize=address" LDFLAGS="-fsanitize=address"
+      run: make -j8 CFLAGS="-Werror -Wall -Wextra -Wno-sign-compare -fsanitize=address" LDFLAGS="-fsanitize=address"
     - name: Run unit tests
       run: make -C tests/unit CFLAGS="-fsanitize=address" LDFLAGS="-fsanitize=address" check
diff --git a/.github/workflows/macos_unit_tests.yml b/.github/workflows/macos_unit_tests.yml
index 014c5cdcc8..193eb86c27 100644
--- a/.github/workflows/macos_unit_tests.yml
+++ b/.github/workflows/macos_unit_tests.yml
@@ -20,6 +20,6 @@ jobs:
       run: >
         ./autogen.sh --enable-debug
     - name: Compile and link
-      run: MACOSX_DEPLOYMENT_TARGET=15.4 make -j8 CFLAGS="-Werror -Wall"
+      run: MACOSX_DEPLOYMENT_TARGET=15.4 make -j8 CFLAGS="-Werror -Wall -Wextra -Wno-sign-compare"
     - name: Run unit tests
       run: make -C tests/unit check
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index c46cb5b19a..0f72353e21 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -16,6 +16,6 @@ jobs:
     - name: Run autotools / configure
       run: ./autogen.sh --enable-debug
     - name: Compile and link (make)
-      run: make -j8 CFLAGS="-Werror -Wall"
+      run: make -j8 CFLAGS="-Werror -Wall -Wextra -Wno-sign-compare"
     - name: Run unit tests
       run: make -C tests/unit check
diff --git a/libntech b/libntech
index 11be6817ae..b05a7a3d16 160000
--- a/libntech
+++ b/libntech
@@ -1 +1 @@
-Subproject commit 11be6817ae8067aa3a1626a3871deb872093e0e2
+Subproject commit b05a7a3d1664bbc5ec7b029071cb54a80154c925