diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 4dfe6eba98fe..63f79fa100e6 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -76,7 +76,7 @@ To run the integration tests, use:
 pnpm build && pnpm test:integrations
 ```
 
-Additionally, some features require testing in browsers (i.e to ensure CSS variable resolution works as expected). These can be run via:
+Additionally, some features require testing in browsers (i.e. to ensure CSS variable resolution works as expected). These can be run via:
 
 ```sh
 pnpm build && pnpm test:ui
diff --git a/packages/tailwindcss/src/css-functions.test.ts b/packages/tailwindcss/src/css-functions.test.ts
index 0c5a3c97e46a..3e880dd8b0d7 100644
--- a/packages/tailwindcss/src/css-functions.test.ts
+++ b/packages/tailwindcss/src/css-functions.test.ts
@@ -1361,7 +1361,7 @@ test('resolves paths ending with a 1', async () => {
   `)
 })
 
-test('upgrades to a full JS compat theme lookup if a value can not be mapped to a CSS variable', async () => {
+test('upgrades to a full JS compat theme lookup if a value cannot be mapped to a CSS variable', async () => {
   expect(
     await compileCss(
       css`
diff --git a/packages/tailwindcss/src/index.test.ts b/packages/tailwindcss/src/index.test.ts
index 3bc3edad33eb..5eb7407d81dd 100644
--- a/packages/tailwindcss/src/index.test.ts
+++ b/packages/tailwindcss/src/index.test.ts
@@ -3098,7 +3098,7 @@ describe('plugins', () => {
     ).rejects.toThrowErrorMatchingInlineSnapshot(`[Error: \`@plugin\` must have a path.]`)
   })
 
-  test('@plugin can not have an empty path', () => {
+  test('@plugin cannot have an empty path', () => {
     return expect(
       compile(
         css`