diff --git a/cspell/vscode-user-dictionary.txt b/cspell/vscode-user-dictionary.txt
index 3ded110..e919c44 100644
--- a/cspell/vscode-user-dictionary.txt
+++ b/cspell/vscode-user-dictionary.txt
@@ -45,6 +45,7 @@ ekosystem
 elpaca
 emacsclient
 envctl
+errgroup
 Evernote
 Falsef
 feedly
@@ -205,6 +206,7 @@ solargraph
 sshake
 sshkey
 staticcheck
+Streamable
 stretchr
 Subtests
 tailscale
diff --git a/harper-ls/dictionary.txt b/harper-ls/dictionary.txt
index e404342..27e86ad 100644
--- a/harper-ls/dictionary.txt
+++ b/harper-ls/dictionary.txt
@@ -25,7 +25,6 @@ Katapult's
 Kiro
 Linuxbrew
 Loadbalancers
-MCP
 Makefile
 Menlo
 Myhrberg
@@ -176,6 +175,7 @@ lsp
 mTLS
 magit
 maxWait
+mcp
 metricks
 minfraud
 mise
@@ -244,6 +244,8 @@ solargraph
 sshake
 sshkey
 staticcheck
+stderr
+stdout
 stretchr
 tailscale
 talosctl