diff --git a/src/run-script.js b/src/run-script.js
index 9cf4de1f..43769ba1 100755
--- a/src/run-script.js
+++ b/src/run-script.js
@@ -47,7 +47,7 @@ function getEnv() {
         return envCopy
       },
       {
-        [`SCRIPTS_${script.toUpperCase()}`]: true,
+        [`SCRIPTS_${script.toUpperCase().replace(/-/g, '_')}`]: true,
       },
     )
 }
diff --git a/src/scripts/__tests__/__snapshots__/test.js.snap b/src/scripts/__tests__/__snapshots__/test.js.snap
index ce378b88..bf955799 100644
--- a/src/scripts/__tests__/__snapshots__/test.js.snap
+++ b/src/scripts/__tests__/__snapshots__/test.js.snap
@@ -6,7 +6,7 @@ exports[`test does not watch --updateSnapshot 1`] = `--config {"builtInConfig":t
 
 exports[`test does not watch on CI 1`] = `--config {"builtInConfig":true}`;
 
-exports[`test does not watch on SCRIPTS_PRE-COMMIT 1`] = `--config {"builtInConfig":true}`;
+exports[`test does not watch on SCRIPTS_PRE_COMMIT 1`] = `--config {"builtInConfig":true}`;
 
 exports[`test does not watch with --coverage 1`] = `--config {"builtInConfig":true} --coverage`;
 
diff --git a/src/scripts/__tests__/test.js b/src/scripts/__tests__/test.js
index 3069a317..8f763795 100644
--- a/src/scripts/__tests__/test.js
+++ b/src/scripts/__tests__/test.js
@@ -24,9 +24,9 @@ cases(
     const {run: jestRunMock} = require('jest')
     const originalArgv = process.argv
     const prevCI = mockIsCI
-    const prevPreCommit = process.env['SCRIPTS_PRE-COMMIT']
+    const prevPreCommit = process.env.SCRIPTS_PRE_COMMIT
     mockIsCI = ci
-    process.env['SCRIPTS_PRE-COMMIT'] = preCommit
+    process.env.SCRIPTS_PRE_COMMIT = preCommit
     Object.assign(utils, {
       hasPkgProp: () => pkgHasJestProp,
       hasFile: () => hasJestConfigFile,
@@ -50,7 +50,7 @@ cases(
       // afterEach
       process.argv = originalArgv
       mockIsCI = prevCI
-      process.env['SCRIPTS_PRE-COMMIT'] = prevPreCommit
+      process.env.SCRIPTS_PRE_COMMIT = prevPreCommit
       jest.resetModules()
     }
   },
@@ -59,7 +59,7 @@ cases(
     'does not watch on CI': {
       ci: true,
     },
-    'does not watch on SCRIPTS_PRE-COMMIT': {
+    'does not watch on SCRIPTS_PRE_COMMIT': {
       preCommit: 'true',
     },
     'does not watch with --no-watch': {
diff --git a/src/scripts/__tests__/validate.js b/src/scripts/__tests__/validate.js
index b0eed6ed..6a6b4909 100644
--- a/src/scripts/__tests__/validate.js
+++ b/src/scripts/__tests__/validate.js
@@ -10,7 +10,7 @@ cases(
     const {sync: crossSpawnSyncMock} = require('cross-spawn')
     const originalExit = process.exit
     process.exit = jest.fn()
-    process.env['SCRIPTS_PRE-COMMIT'] = 'false'
+    process.env.SCRIPTS_PRE_COMMIT = 'false'
     const teardown = setup()
 
     try {
@@ -50,10 +50,10 @@ cases(
     },
     [`doesn't use test or lint if it's in pre-commit`]: {
       setup: withDefaultSetup(() => {
-        const previousVal = process.env['SCRIPTS_PRE-COMMIT']
-        process.env['SCRIPTS_PRE-COMMIT'] = 'true'
+        const previousVal = process.env.SCRIPTS_PRE_COMMIT
+        process.env.SCRIPTS_PRE_COMMIT = 'true'
         return function teardown() {
-          process.env['SCRIPTS_PRE-COMMIT'] = previousVal
+          process.env.SCRIPTS_PRE_COMMIT = previousVal
         }
       }),
     },
diff --git a/src/scripts/test.js b/src/scripts/test.js
index 106a2d09..e3204843 100644
--- a/src/scripts/test.js
+++ b/src/scripts/test.js
@@ -8,7 +8,7 @@ const args = process.argv.slice(2)
 
 const watch =
   !isCI &&
-  !parseEnv('SCRIPTS_PRE-COMMIT', false) &&
+  !parseEnv('SCRIPTS_PRE_COMMIT', false) &&
   !args.includes('--no-watch') &&
   !args.includes('--coverage') &&
   !args.includes('--updateSnapshot')
diff --git a/src/scripts/validate.js b/src/scripts/validate.js
index 7d67c285..7e784fc4 100644
--- a/src/scripts/validate.js
+++ b/src/scripts/validate.js
@@ -9,7 +9,7 @@ const {
 // pre-commit runs linting and tests on the relevant files
 // so those scripts don't need to be run if we're running
 // this in the context of a pre-commit hook.
-const preCommit = parseEnv('SCRIPTS_PRE-COMMIT', false)
+const preCommit = parseEnv('SCRIPTS_PRE_COMMIT', false)
 
 const validateScripts = process.argv[2]