Fix for #515

requirements.txt

@@ -1,23 +1,23 @@
-pyobjc-core>=7.2
-pyobjc-framework-AppleScriptKit>=7.2
-pyobjc-framework-AppleScriptObjC>=7.2
-pyobjc-framework-Photos>=7.2
-pyobjc-framework-Quartz>=7.2
-pyobjc-framework-AVFoundation>=7.2
-pyobjc-framework-CoreServices>=7.2
-pyobjc-framework-Metal>=7.2
-pyobjc-framework-Vision>=7.2
-Click==8.0.1
-PyYAML==5.4.1
-Mako==1.1.4
+pyobjc-core>=7.2,<8.0
+pyobjc-framework-AppleScriptKit>=7.2,<8.0
+pyobjc-framework-AppleScriptObjC>=7.2,<8.0
+pyobjc-framework-Photos>=7.2,<8.0
+pyobjc-framework-Quartz>=7.2,<8.0
+pyobjc-framework-AVFoundation>=7.2,<8.0
+pyobjc-framework-CoreServices>=7.2,<8.0
+pyobjc-framework-Metal>=7.2,<8.0
+pyobjc-framework-Vision>=7.2,<8.0
+Click>=8.0.1,<9.0
+PyYAML>=5.4.1<5.5.0
+Mako>=1.1.4,<1.2.0
 bpylist2==3.0.2
-pathvalidate==2.4.1
+pathvalidate>=2.4.1,<2.5.0
 dataclasses==0.7;python_version<'3.7'
-wurlitzer==2.1.0
-photoscript==0.1.4
-toml==0.10.2
-osxmetadata==0.99.33
-textx==2.3.0
-rich==10.6.0
-bitmath==1.3.3.1
-more-itertools==8.8.0 
+wurlitzer>=2.1.0,<2.2.0
+photoscript>=0.1.4,<0.2.0
+toml>=0.10.2,<0.11.0
+osxmetadata>=0.99.33,<1.0.0
+textx>=2.3.0,<2.4.0
+rich>=10.6.0,<11.0.0
+bitmath>=1.3.3.1,<1.4.0.0
+more-itertools>=8.8.0,<9.0.0