diff --git a/Makefile.envs b/Makefile.envs
index 207c7ecdc..d53d266ef 100644
--- a/Makefile.envs
+++ b/Makefile.envs
@@ -145,7 +145,7 @@ export MAIN_MODULE_CFLAGS= $(CFLAGS_BASE) \
 	-I$(PYTHONINCLUDE) \
 	-s EXCEPTION_CATCHING_ALLOWED=['we only want to allow exception handling in side modules']
 
-export STDLIB_MODULE_CFLAGS= $(SIDE_MODULE_CFLAGS) -I Include/ -I .
+export STDLIB_MODULE_CFLAGS= $(SIDE_MODULE_CFLAGS) -I Include/ -I . -I Include/internal/
 
 # For RUST
 export CARGO_HOME ?= $(HOME)/.cargo
diff --git a/docs/project/changelog.md b/docs/project/changelog.md
index 436c35dd5..985fd82f2 100644
--- a/docs/project/changelog.md
+++ b/docs/project/changelog.md
@@ -12,6 +12,10 @@ substitutions:
 
 # Change Log
 
+## Unreleased
+
+- New packages: the standard library lzma module {pr}`2939`
+
 ## Version 0.21.0
 
 _August 9, 2022_
diff --git a/packages/liblzma/meta.yaml b/packages/liblzma/meta.yaml
new file mode 100644
index 000000000..a3d8bf53f
--- /dev/null
+++ b/packages/liblzma/meta.yaml
@@ -0,0 +1,25 @@
+package:
+  name: liblzma
+  version: 5.2.2
+
+source:
+  url: https://github.com/xz-mirror/xz/releases/download/v5.2.2/xz-5.2.2.tar.gz
+  sha256: 73df4d5d34f0468bd57d09f2d8af363e95ed6cc3a4a86129d2f2c366259902a2
+
+build:
+  library: true
+  script: |
+    emconfigure ./configure \
+        CFLAGS="-fPIC" \
+        --disable-xz \
+        --disable-xzdec \
+        --disable-lzmadec \
+        --disable-lzmainfo \
+        --disable-lzma-links \
+        --disable-scripts \
+        --disable-doc \
+        --enable-shared=no \
+        --prefix=${WASM_LIBRARY_DIR}
+
+    emmake make -j ${PYODIDE_JOBS:-3}
+    emmake make install
diff --git a/packages/lzma/empty/.keep b/packages/lzma/empty/.keep
new file mode 100644
index 000000000..e69de29bb
diff --git a/packages/lzma/meta.yaml b/packages/lzma/meta.yaml
new file mode 100644
index 000000000..507bcafca
--- /dev/null
+++ b/packages/lzma/meta.yaml
@@ -0,0 +1,23 @@
+package:
+  name: lzma
+  version: 1.0.0 # Nonesense
+  _cpython_dynlib: true
+source:
+  path: empty
+build:
+  sharedlibrary: true
+  script: |
+    mkdir dist
+    export DISTDIR=$(pwd)/dist
+    cd $CPYTHONBUILD
+    emcc $STDLIB_MODULE_CFLAGS -c Modules/_lzmamodule.c -o Modules/_lzmamodule.o \
+      $(pkg-config --cflags --dont-define-prefix liblzma)
+
+    emcc Modules/_lzmamodule.o -o $DISTDIR/_lzma.so $SIDE_MODULE_LDFLAGS \
+      $(pkg-config --libs --dont-define-prefix liblzma)
+requirements:
+  run:
+    - liblzma
+test:
+  imports:
+    - lzma
diff --git a/packages/lzma/test_lzma.py b/packages/lzma/test_lzma.py
new file mode 100644
index 000000000..937af9287
--- /dev/null
+++ b/packages/lzma/test_lzma.py
@@ -0,0 +1,17 @@
+from pytest_pyodide import run_in_pyodide
+
+
+@run_in_pyodide(packages=["test", "lzma"], pytest_assert_rewrites=False)
+def test_lzma(selenium):
+    # TODO: libregrtest.main(["test_lzma"]) doesn't collect any tests for some unknown reason.
+
+    import test.test_lzma
+    import unittest
+
+    suite = unittest.TestSuite(
+        [unittest.TestLoader().loadTestsFromModule(test.test_lzma)]
+    )
+
+    runner = unittest.TextTestRunner(verbosity=2)
+    result = runner.run(suite)
+    assert result.wasSuccessful()
diff --git a/pyodide-build/pyodide_build/common.py b/pyodide-build/pyodide_build/common.py
index 9ad476f24..13f1acdef 100644
--- a/pyodide-build/pyodide_build/common.py
+++ b/pyodide-build/pyodide_build/common.py
@@ -80,6 +80,7 @@ CORE_PACKAGES = {
     "sharedlib-test-py",
     "cpp-exceptions-test",
     "ssl",
+    "lzma",
     "pytest",
     "tblib",
 }