diff --git a/buildspec-pr.yaml b/buildspec-pr.yaml
index 98edcbb3d32a6..2cbd14c7553a8 100644
--- a/buildspec-pr.yaml
+++ b/buildspec-pr.yaml
@@ -7,7 +7,6 @@ phases:
     commands:
       # Install yarn if it wasn't already present in the image
       - yarn --version || npm -g install yarn
-      - yarn install --frozen-lockfile
   build:
     commands:
       - /bin/bash ./build.sh && git diff-index --exit-code --ignore-space-at-eol --stat HEAD
diff --git a/buildspec.yaml b/buildspec.yaml
index 9d8f575942945..7c5c8fcc14585 100644
--- a/buildspec.yaml
+++ b/buildspec.yaml
@@ -7,7 +7,6 @@ phases:
     commands:
       # Install yarn if it wasn't already present in the image
       - yarn --version || npm -g install yarn
-      - yarn install --frozen-lockfile
   pre_build:
     commands:
       - /bin/bash ./fetch-dotnet-snk.sh