diff --git a/collects/tests/macro-debugger/all-tests.rkt b/collects/tests/macro-debugger/all-tests.rkt
index 0d2ece8..577eb8d 100644
--- a/collects/tests/macro-debugger/all-tests.rkt
+++ b/collects/tests/macro-debugger/all-tests.rkt
@@ -1,6 +1,6 @@
 #lang scheme/base
-(require rktunit
-         rktunit/gui)
+(require racunit
+         racunit/gui)
 (require macro-debugger/model/debug
          "gentest-framework.ss"
          "gentests.ss"
diff --git a/collects/tests/macro-debugger/gentests.rkt b/collects/tests/macro-debugger/gentests.rkt
index bcf9c2f..55c6e24 100644
--- a/collects/tests/macro-debugger/gentests.rkt
+++ b/collects/tests/macro-debugger/gentests.rkt
@@ -1,5 +1,5 @@
 #lang scheme/base
-(require rktunit)
+(require racunit)
 (require macro-debugger/model/debug
          macro-debugger/model/stx-util
          "gentest-framework.ss"
diff --git a/collects/tests/macro-debugger/tests/collects.rkt b/collects/tests/macro-debugger/tests/collects.rkt
index ee70b26..fff6426 100644
--- a/collects/tests/macro-debugger/tests/collects.rkt
+++ b/collects/tests/macro-debugger/tests/collects.rkt
@@ -1,6 +1,6 @@
 #lang scheme/base
-(require rktunit
-         rktunit/gui)
+(require racunit
+         racunit/gui)
 (require macro-debugger/model/debug
          scheme/path
          scheme/gui)
diff --git a/collects/tests/macro-debugger/tests/hiding.rkt b/collects/tests/macro-debugger/tests/hiding.rkt
index b3f4a54..941c093 100644
--- a/collects/tests/macro-debugger/tests/hiding.rkt
+++ b/collects/tests/macro-debugger/tests/hiding.rkt
@@ -1,5 +1,5 @@
 #lang scheme/base
-(require rktunit)
+(require racunit)
 (require macro-debugger/model/debug
          "../test-setup.ss")
 (provide specialized-hiding-tests)
diff --git a/collects/tests/macro-debugger/tests/policy.rkt b/collects/tests/macro-debugger/tests/policy.rkt
index 57f6cab..757de46 100644
--- a/collects/tests/macro-debugger/tests/policy.rkt
+++ b/collects/tests/macro-debugger/tests/policy.rkt
@@ -1,5 +1,5 @@
 #lang scheme/base
-(require rktunit)
+(require racunit)
 (require macro-debugger/model/debug
          "../test-setup.ss")
 (provide policy-tests)
diff --git a/collects/tests/macro-debugger/tests/regression.rkt b/collects/tests/macro-debugger/tests/regression.rkt
index fb0f9d9..c4c9236 100644
--- a/collects/tests/macro-debugger/tests/regression.rkt
+++ b/collects/tests/macro-debugger/tests/regression.rkt
@@ -1,5 +1,5 @@
 #lang scheme/base
-(require rktunit)
+(require racunit)
 (require macro-debugger/model/debug
          macro-debugger/model/steps
          "../test-setup.ss")