diff --git a/.github/workflows/release-checks.yml b/.github/workflows/release-checks.yml
index ea4e20af3..4c8667eb4 100644
--- a/.github/workflows/release-checks.yml
+++ b/.github/workflows/release-checks.yml
@@ -3,7 +3,8 @@ name: Release Checks
 # Gates intended to mirror the wolfTPM release procedure:
 #   - C++ build with CC=g++ (proves headers are C++-safe for consumers)
 #   - scan-build --status-bugs (Clang static analysis)
-# Both run on every PR and every push to release branches so regressions are
+#   - source tarball completeness (pack minimal, rebuild with every feature)
+# These run on every PR and every push to release branches so regressions are
 # caught at PR time instead of during release prep.
 
 on:
@@ -155,3 +156,46 @@ jobs:
             scan-results-default/
             scan-results-fwtpm/
           retention-days: 7
+
+  dist_tarball:
+    name: Source distribution build
+    if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - name: Checkout wolfTPM
+        uses: actions/checkout@v4
+
+      # PQC-enabled wolfSSL is a superset of what fwTPM and SPDM need, so one
+      # install covers the maximal rebuild below.
+      - name: Setup wolfSSL with PQC
+        uses: ./.github/actions/setup-wolfssl
+        with:
+          configure-flags: >-
+            --enable-wolftpm --enable-pkcallbacks --enable-keygen
+            --enable-dilithium --enable-mlkem --enable-experimental --enable-harden
+            --enable-aescfb
+          cflags: -DWC_RSA_NO_PADDING
+
+      # Pack from a minimal config on purpose: EXTRA_DIST nested in a conditional
+      # is dropped from the tarball unless that conditional was on at pack time,
+      # so packing minimal and rebuilding maximal is what exposes a missing file.
+      - name: Create source tarball (minimal config)
+        run: |
+          ./autogen.sh
+          ./configure --disable-fwtpm
+          make dist
+
+      - name: Rebuild tarball via autotools (fwtpm + spdm + pqc)
+        run: |
+          tar xzf wolftpm-*.tar.gz
+          cd wolftpm-*/
+          ./configure --enable-fwtpm --enable-spdm --enable-pqc
+          make -j"$(nproc)"
+
+      - name: Rebuild tarball via CMake
+        run: |
+          cd "$(ls -d wolftpm-*/ | head -1)"
+          mkdir build && cd build
+          cmake -DWOLFTPM_FWTPM=yes -DWITH_WOLFSSL=/usr/local ..
+          cmake --build . --parallel
diff --git a/cmake/include.am b/cmake/include.am
index ceec20a62..b5cc67ad4 100644
--- a/cmake/include.am
+++ b/cmake/include.am
@@ -1,2 +1,3 @@
 EXTRA_DIST += cmake/README.md
 EXTRA_DIST += cmake/config.in
+EXTRA_DIST += cmake/wolftpm-config.cmake.in
diff --git a/examples/pqc/include.am b/examples/pqc/include.am
index 8f2b9ea51..3b79085e1 100644
--- a/examples/pqc/include.am
+++ b/examples/pqc/include.am
@@ -39,8 +39,10 @@ examples_pqc_pqc_ctrl_SOURCES      = examples/pqc/pqc_ctrl.c
 examples_pqc_pqc_ctrl_LDADD        = src/libwolftpm.la $(LIB_STATIC_ADD)
 examples_pqc_pqc_ctrl_DEPENDENCIES = src/libwolftpm.la
 
-EXTRA_DIST += examples/pqc/README.md
-EXTRA_DIST += examples/pqc/pqc_ctrl.sh
-
 endif
 endif
+
+# Ship unconditionally so these are not dropped from a tarball packaged without
+# PQC enabled (EXTRA_DIST inside a conditional is excluded from dist otherwise).
+EXTRA_DIST += examples/pqc/README.md
+EXTRA_DIST += examples/pqc/pqc_ctrl.sh
diff --git a/src/spdm/include.am b/src/spdm/include.am
index 2e7ed2e2e..f6838fd83 100644
--- a/src/spdm/include.am
+++ b/src/spdm/include.am
@@ -41,7 +41,9 @@ src_spdm_unit_test_SOURCES  = src/spdm/unit_test.c
 src_spdm_unit_test_LDADD    = src/libwolftpm.la $(LIB_STATIC_ADD)
 src_spdm_unit_test_CFLAGS   = $(AM_CFLAGS)
 
+endif BUILD_SPDM
+
+# Ship unconditionally: EXTRA_DIST inside a conditional is dropped from the dist
+# tarball when packaged without --enable-spdm, breaking later --enable-spdm builds.
 EXTRA_DIST += src/spdm/spdm_internal.h
 EXTRA_DIST += src/spdm/README.md
-
-endif BUILD_SPDM
diff --git a/tests/include.am b/tests/include.am
index 3d352b0e7..50597edcf 100644
--- a/tests/include.am
+++ b/tests/include.am
@@ -54,3 +54,5 @@ if BUILD_FWTPM
 dist_noinst_SCRIPTS += tests/fwtpm_check.sh \
                        tests/fwtpm_da_retry.sh
 endif
+
+EXTRA_DIST += tests/pqc_kat_vectors.h