diff --git a/.github/workflows/build_viewer.yml b/.github/workflows/build_viewer.yml
index d85167e867..439c0136be 100644
--- a/.github/workflows/build_viewer.yml
+++ b/.github/workflows/build_viewer.yml
@@ -30,7 +30,6 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
-        if: runner.os != 'Windows'
         id: py311
         with:
           python-version: '3.11'
diff --git a/requirements.txt b/requirements.txt
index f1af8c21d1..7a96d70520 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-llbase>=1.2.11
-autobuild>=3.9.1
-llsd>=1.0.0
\ No newline at end of file
+llbase=1.2.11
+autobuild=3.9.1
+llsd=1.2.1
\ No newline at end of file