diff --git a/.github/workflows/build_rocky.yml b/.github/workflows/build_rocky.yml
index 46b2dd6966..4b88f7e90b 100644
--- a/.github/workflows/build_rocky.yml
+++ b/.github/workflows/build_rocky.yml
@@ -17,6 +17,7 @@ jobs:
                          sqlite-devel bzip2-devel zlib-devel openssl-devel xz-devel      \
                          readline-devel ncurses-devel libffi-devel libuuid-devel git-lfs \
                          findutils xz
+          python3 -m pip install typing_extensions
           git config --global --add safe.directory '*'
 
       - name: Install aws cli
diff --git a/.github/workflows/build_rocky_arm.yml b/.github/workflows/build_rocky_arm.yml
index aac5bdba3f..aa6c689ff9 100644
--- a/.github/workflows/build_rocky_arm.yml
+++ b/.github/workflows/build_rocky_arm.yml
@@ -17,6 +17,7 @@ jobs:
                          sqlite-devel bzip2-devel zlib-devel openssl-devel xz-devel      \
                          readline-devel ncurses-devel libffi-devel libuuid-devel git-lfs \
                          findutils xz
+          python3 -m pip install typing_extensions
           git config --global --add safe.directory '*'
 
       - name: Install aws cli
diff --git a/nix/build-all.py b/nix/build-all.py
index ae3e227274..8b79a4d03c 100644
--- a/nix/build-all.py
+++ b/nix/build-all.py
@@ -98,8 +98,12 @@ import time
 from urllib.request import urlretrieve
 from collections.abc import Generator, Sequence
 from pathlib import Path
-from typing import Union, Literal
-
+try:
+    from typing import Union, Literal
+except:
+    # python 3.6 compatibility for rocky 8
+    from typing import Union
+    from typing_extensions import Literal
 
 logger = logging.getLogger(__name__)
 logger.setLevel(logging.INFO)
@@ -237,7 +241,7 @@ cecho(
 """
 )
 
-dependency_tree: dict[str, tuple[str, ...]] = {
+dependency_tree: 'dict[str, tuple[str, ...]]' = {
     "IfcParse": ("boost", "libxml2", "hdf5"),
     "IfcGeom": ("IfcParse", "occ", "json", "cgal", "eigen"),
     "IfcConvert": ("IfcGeom",),
@@ -259,7 +263,7 @@ dependency_tree: dict[str, tuple[str, ...]] = {
 }
 
 
-def gather_dependencies(dep: str) -> Generator[str]:
+def gather_dependencies(dep: str) -> 'Generator[str]':
     yield dep
     for d in dependency_tree[dep]:
         for x in gather_dependencies(d):