diff --git a/packages/starboard-python/yarn.lock b/packages/starboard-python/yarn.lock
index 4d81ea44..42d11c33 100644
--- a/packages/starboard-python/yarn.lock
+++ b/packages/starboard-python/yarn.lock
@@ -285,7 +285,7 @@ babel-plugin-syntax-jsx@^6.18.0:
 
 balanced-match@^1.0.0:
   version "1.0.2"
-  resolved "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.2.tgz#e83e3a7e3f300b34cb9d87f615fa0cbf357690ee"
 
 base-64@^1.0.0:
   version "1.0.0"
@@ -293,7 +293,7 @@ base-64@^1.0.0:
 
 brace-expansion@^1.1.7:
   version "1.1.11"
-  resolved "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
   dependencies:
     balanced-match "^1.0.0"
     concat-map "0.0.1"
@@ -368,7 +368,7 @@ compute-scroll-into-view@^1.0.17:
 
 concat-map@0.0.1:
   version "0.0.1"
-  resolved "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
 
 copy-to-clipboard@^3.0.8:
   version "3.3.1"
@@ -785,8 +785,8 @@ merge-stream@^2.0.0:
   resolved "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz"
 
 minimatch@^3.0.4:
-  version "3.0.4"
-  resolved "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz"
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.1.2.tgz#19cd194bfd3e428f049a70817c038d89ab4be35b"
   dependencies:
     brace-expansion "^1.1.7"
 
@@ -1236,9 +1236,9 @@ stackframe@^1.1.1:
   version "1.2.1"
   resolved "https://registry.npmjs.org/stackframe/-/stackframe-1.2.1.tgz"
 
-starboard-rich-editor@^0.15.2:
-  version "0.15.2"
-  resolved "file:../starboard-rich-editor"
+starboard-rich-editor@^0.15.7:
+  version "0.15.7"
+  resolved "https://registry.yarnpkg.com/starboard-rich-editor/-/starboard-rich-editor-0.15.7.tgz#ce741ba75077b201bcf2e1d02a2ef7a0e09b8837"
   dependencies:
     "@babel/parser" "^7.10.5"
     "@benrbray/prosemirror-math" "^0.1.4"