diff --git a/dev_requirements.txt b/dev_requirements.txt
index 54c54ca8..f251e0ba 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -2,7 +2,7 @@ build
 bump2version==1.0.1 
 cogapp>=3.3.0,<4.0.0
 furo
-m2r2==0.3.3
+m2r2==0.3.3.post2
 pdbpp
 pyinstaller==5.6.2
 pytest-cov==4.0.0 
diff --git a/requirements.txt b/requirements.txt
index 32639535..13c6fd1a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,21 +4,21 @@ Click>=8.0.4,<9.0
 Mako>=1.2.2,<1.3.0
 more-itertools>=8.8.0,<9.0.0
 objexplore>=1.6.3,<2.0.0
-osxmetadata>=1.2.0,<2.0.0
+osxmetadata>=1.2.0,<2.0.0; sys_platform == 'darwin'
 packaging>=21.3
 pathvalidate>=2.4.1,<2.5.0
 photoscript>=0.3.0,<0.4.0
 ptpython>=3.0.20,<3.1.0
-pyobjc-core>=9.0,<10.0
-pyobjc-framework-AppleScriptKit>=9.0,<10.0
-pyobjc-framework-AppleScriptObjC>=9.0,<10.0
-pyobjc-framework-AVFoundation>=9.0,<10.0
-pyobjc-framework-Cocoa>=9.0,<10.0
-pyobjc-framework-CoreServices>=9.0,<10.0
-pyobjc-framework-Metal>=9.0,<10.0
-pyobjc-framework-Photos>=9.0,<10.0
-pyobjc-framework-Quartz>=9.0,<10.0
-pyobjc-framework-Vision>=9.0,<10.0
+pyobjc-core>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-AppleScriptKit>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-AppleScriptObjC>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-AVFoundation>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-Cocoa>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-CoreServices>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-Metal>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-Photos>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-Quartz>=9.0,<10.0; sys_platform == 'darwin'
+pyobjc-framework-Vision>=9.0,<10.0; sys_platform == 'darwin'
 pytimeparse2==1.4.0
 PyYAML>=6.0.0,<7.0.0
 requests>=2.27.1,<3.0.0