diff --git a/.github/workflows/build+test.yml b/.github/workflows/build+test.yml
index 4946e5968..dfd5dcece 100644
--- a/.github/workflows/build+test.yml
+++ b/.github/workflows/build+test.yml
@@ -70,7 +70,7 @@ jobs:
 
       - name: install fsdocs
         run:
-          dotnet tool install -g fsdocs-tool
+          dotnet tool install -g fsdocs-tool --version 16.1.1
 
       - name: build fsdocs
         run: