diff --git a/backend/handler/filesystem/roms_handler.py b/backend/handler/filesystem/roms_handler.py
index 8fd0629d5..f53e32c84 100644
--- a/backend/handler/filesystem/roms_handler.py
+++ b/backend/handler/filesystem/roms_handler.py
@@ -112,9 +112,17 @@ def read_gz_file(file_path: Path) -> Iterator[bytes]:
 def read_7z_file(file_path: Path) -> Iterator[bytes]:
     try:
         with py7zr.SevenZipFile(file_path, "r") as f:
-            for _name, bio in f.readall().items():
-                while chunk := bio.read(FILE_READ_CHUNK_SIZE):
-                    yield chunk
+            for name in f.namelist():
+                # TODO: This `read` call still reads the member file for this iteration into memory
+                #       (but not the whole 7zip archive). This is because `py7zr` does not support
+                #       streaming decompression yet.
+                #       Related issue: https://github.com/miurahr/py7zr/issues/579
+                for bio in f.read([name]).values():
+                    while chunk := bio.read(FILE_READ_CHUNK_SIZE):
+                        yield chunk
+                # Extracting each file separately requires resetting file pointer and decompressor
+                # between `read` operations.
+                f.reset()
     except (
         Bad7zFile,
         DecompressionError,
diff --git a/poetry.lock b/poetry.lock
index 98e5ffdf8..fdfa7c449 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1538,13 +1538,13 @@ tests = ["pytest"]
 
 [[package]]
 name = "py7zr"
-version = "0.21.1"
+version = "0.22.0"
 description = "Pure python 7-zip library"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "py7zr-0.21.1-py3-none-any.whl", hash = "sha256:57e5be6fafaa417fe93fa9c81f7f01bb579d3cfe1631f535a3e641200ac87dc2"},
-    {file = "py7zr-0.21.1.tar.gz", hash = "sha256:dede8ed8b7b32b3586ac476da3a482b69dd433229420bf0f62c495404b72c799"},
+    {file = "py7zr-0.22.0-py3-none-any.whl", hash = "sha256:993b951b313500697d71113da2681386589b7b74f12e48ba13cc12beca79d078"},
+    {file = "py7zr-0.22.0.tar.gz", hash = "sha256:c6c7aea5913535184003b73938490f9a4d8418598e533f9ca991d3b8e45a139e"},
 ]
 
 [package.dependencies]
@@ -1563,7 +1563,7 @@ texttable = "*"
 check = ["black (>=23.1.0)", "check-manifest", "flake8 (<8)", "flake8-black (>=0.3.6)", "flake8-deprecated", "flake8-isort", "isort (>=5.0.3)", "lxml", "mypy (>=0.940)", "mypy-extensions (>=0.4.1)", "pygments", "readme-renderer", "twine", "types-psutil"]
 debug = ["pytest", "pytest-leaks", "pytest-profiling"]
 docs = ["docutils", "sphinx (>=5.0)", "sphinx-a4doc", "sphinx-py3doc-enhanced-theme"]
-test = ["coverage[toml] (>=5.2)", "coveralls (>=2.1.1)", "py-cpuinfo", "pyannotate", "pytest", "pytest-benchmark", "pytest-cov", "pytest-remotedata", "pytest-timeout"]
+test = ["coverage[toml] (>=5.2)", "coveralls (>=2.1.1)", "py-cpuinfo", "pytest", "pytest-benchmark", "pytest-cov", "pytest-remotedata", "pytest-timeout"]
 test-compat = ["libarchive-c"]
 
 [[package]]
@@ -2880,7 +2880,6 @@ description = "Automatically mock your HTTP interactions to simplify and speed u
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "vcrpy-6.0.1-py2.py3-none-any.whl", hash = "sha256:621c3fb2d6bd8aa9f87532c688e4575bcbbde0c0afeb5ebdb7e14cac409edfdd"},
     {file = "vcrpy-6.0.1.tar.gz", hash = "sha256:9e023fee7f892baa0bbda2f7da7c8ac51165c1c6e38ff8688683a12a4bde9278"},
 ]
 
@@ -3253,4 +3252,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.12"
-content-hash = "68a20b03af6c0f1bdf77a7f110c3b7cb331abf28ea90572bc6e24da85ae58825"
+content-hash = "2893404f282f59d33a162c4d8410669f71a0bd125fb5c5c821d00f7db8627476"
diff --git a/pyproject.toml b/pyproject.toml
index 3a5977e53..dffc6f7a2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ joserfc = "^0.9.0"
 pillow = "^10.3.0"
 certifi = "2024.07.04"
 python-magic = "^0.4.27"
-py7zr = "^0.21.1"
+py7zr = "^0.22"
 streaming-form-data = "^1.16.0"
 zipfile-deflate64 = "^0.2.0"