diff --git a/.cirrus.yml b/.cirrus.yml
index ae4236e0d3..f025397f3c 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -29,6 +29,8 @@ env:
   BENCH: yes
   SECP256K1_BENCH_ITERS: 2
   CTIMETESTS: yes
+  SYMBOL_CHECK: yes
+  VIRTUAL_ENV: /root/venv
   # Compile and run the tests
   EXAMPLES: yes
 
@@ -53,6 +55,7 @@ cat_logs_snippet: &CAT_LOGS
 
 linux_arm64_container_snippet: &LINUX_ARM64_CONTAINER
   env_script:
+    - export PATH="$VIRTUAL_ENV/bin:$PATH"
     - env | tee /tmp/env
   build_script:
     - DOCKER_BUILDKIT=1 docker build --file "ci/linux-debian.Dockerfile" --tag="ci_secp256k1_arm"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a0dd19b54a..6c2fe5f2ec 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,6 +40,7 @@ env:
   BENCH: 'yes'
   SECP256K1_BENCH_ITERS: 2
   CTIMETESTS: 'yes'
+  SYMBOL_CHECK: 'yes'
   # Compile and run the examples.
   EXAMPLES: 'yes'
 
@@ -461,6 +462,7 @@ jobs:
       ASAN_OPTIONS: 'strict_string_checks=1:detect_stack_use_after_return=1:detect_leaks=1'
       LSAN_OPTIONS: 'use_unaligned=1'
       SECP256K1_TEST_ITERS: 32
+      SYMBOL_CHECK: 'no'
 
     steps:
       - name: Checkout
@@ -525,6 +527,7 @@ jobs:
       SECP256K1_TEST_ITERS: 32
       ASM: 'no'
       WITH_VALGRIND: 'no'
+      SYMBOL_CHECK: 'no'
 
     steps:
       - name: Checkout
@@ -620,6 +623,7 @@ jobs:
       CC: 'clang'
       HOMEBREW_NO_AUTO_UPDATE: 1
       HOMEBREW_NO_INSTALL_CLEANUP: 1
+      SYMBOL_CHECK: 'no'
 
     strategy:
       fail-fast: false
@@ -652,6 +656,11 @@ jobs:
         env: ${{ matrix.env_vars }}
         run: ./ci/ci.sh
 
+      - name: Symbol check
+        run: |
+          python3 -m pip install lief
+          python3 ./tools/symbol-check.py .libs/libsecp256k1.dylib
+
       - run: cat tests.log || true
         if: ${{ always() }}
       - run: cat noverify_tests.log || true
@@ -681,6 +690,7 @@ jobs:
       HOMEBREW_NO_INSTALL_CLEANUP: 1
       WITH_VALGRIND: 'no'
       CTIMETESTS: 'no'
+      SYMBOL_CHECK: 'no'
 
     strategy:
       fail-fast: false
@@ -708,6 +718,15 @@ jobs:
         env: ${{ matrix.env_vars }}
         run: ./ci/ci.sh
 
+      - name: Symbol check
+        env:
+          VIRTUAL_ENV: '${{ github.workspace }}/venv'
+        run: |
+          python3 -m venv $VIRTUAL_ENV
+          export PATH="$VIRTUAL_ENV/bin:$PATH"
+          python3 -m pip install lief
+          python3 ./tools/symbol-check.py .libs/libsecp256k1.dylib
+
       - run: cat tests.log || true
         if: ${{ always() }}
       - run: cat noverify_tests.log || true
@@ -763,6 +782,14 @@ jobs:
         run: |
           cd build/bin/RelWithDebInfo && file *tests.exe bench*.exe libsecp256k1-*.dll || true
 
+      - name: Symbol check
+        if: ${{ matrix.configuration.cmake_options != '-A x64 -DBUILD_SHARED_LIBS=OFF' }}
+        run: |
+          choco install --yes --no-progress python3
+          refreshenv
+          python -m pip install lief
+          python .\tools\symbol-check.py build\src\RelWithDebInfo\libsecp256k1-2.dll
+
       - name: Check
         run: |
           ctest -C RelWithDebInfo --test-dir build -j ([int]$env:NUMBER_OF_PROCESSORS + 1)
diff --git a/ci/ci.sh b/ci/ci.sh
index 3636deafa1..170daabd14 100755
--- a/ci/ci.sh
+++ b/ci/ci.sh
@@ -14,7 +14,7 @@ print_environment() {
     for var in WERROR_CFLAGS MAKEFLAGS BUILD \
             ECMULTWINDOW ECMULTGENKB ASM WIDEMUL WITH_VALGRIND EXTRAFLAGS \
             EXPERIMENTAL ECDH RECOVERY EXTRAKEYS MUSIG SCHNORRSIG ELLSWIFT \
-            SECP256K1_TEST_ITERS BENCH SECP256K1_BENCH_ITERS CTIMETESTS\
+            SECP256K1_TEST_ITERS BENCH SECP256K1_BENCH_ITERS CTIMETESTS SYMBOL_CHECK \
             EXAMPLES \
             HOST WRAPPER_CMD \
             CC CFLAGS CPPFLAGS AR NM \
@@ -107,6 +107,19 @@ file *tests* || true
 file bench* || true
 file .libs/* || true
 
+if [ "$SYMBOL_CHECK" = "yes" ]
+then
+    case "$HOST" in
+        *mingw*)
+            ls -l .libs
+            python3 ./tools/symbol-check.py .libs/libsecp256k1-2.dll
+            ;;
+        *)
+            python3 ./tools/symbol-check.py .libs/libsecp256k1.so
+            ;;
+    esac
+fi
+
 # This tells `make check` to wrap test invocations.
 export LOG_COMPILER="$WRAPPER_CMD"
 
diff --git a/ci/linux-debian.Dockerfile b/ci/linux-debian.Dockerfile
index 241bfa9719..547b402232 100644
--- a/ci/linux-debian.Dockerfile
+++ b/ci/linux-debian.Dockerfile
@@ -32,7 +32,7 @@ RUN apt-get update && apt-get install --no-install-recommends -y \
         gcc-powerpc64le-linux-gnu libc6-dev-ppc64el-cross libc6-dbg:ppc64el \
         gcc-mingw-w64-x86-64-win32 wine64 wine \
         gcc-mingw-w64-i686-win32 wine32 \
-        python3 && \
+        python3-full && \
         if ! ( dpkg --print-architecture | grep --quiet "arm64" ) ; then \
          apt-get install --no-install-recommends -y \
          gcc-aarch64-linux-gnu libc6-dev-arm64-cross libc6-dbg:arm64 ;\
@@ -77,3 +77,7 @@ RUN \
     apt-get autoremove -y wget && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
+ENV VIRTUAL_ENV=/root/venv
+RUN python3 -m venv $VIRTUAL_ENV
+ENV PATH="$VIRTUAL_ENV/bin:$PATH"
+RUN pip install lief