diff --git a/testing/junit.bzl b/testing/junit.bzl
index a87ac6817..2208675b9 100644
--- a/testing/junit.bzl
+++ b/testing/junit.bzl
@@ -1,7 +1,12 @@
 load("//junit:junit.bzl", _repositories = "junit_repositories")
+load("//scala:scala_cross_version.bzl", "version_suffix")
+load("@io_bazel_rules_scala_config//:config.bzl", "SCALA_VERSIONS")
 
 def junit_repositories():
     _repositories()
 
 def junit_toolchain():
-    native.register_toolchains("@io_bazel_rules_scala//testing:junit_toolchain")
+    for scala_version in SCALA_VERSIONS:
+        native.register_toolchains(str(Label(
+            "//testing:junit_toolchain" + version_suffix(scala_version),
+        )))
diff --git a/testing/scalatest.bzl b/testing/scalatest.bzl
index 3260aa457..1d66fe50c 100644
--- a/testing/scalatest.bzl
+++ b/testing/scalatest.bzl
@@ -1,5 +1,5 @@
-load("//scalatest:scalatest.bzl", _repositories = "scalatest_repositories")
 load("//scala:scala_cross_version.bzl", "version_suffix")
+load("//scalatest:scalatest.bzl", _repositories = "scalatest_repositories")
 load("@io_bazel_rules_scala_config//:config.bzl", "SCALA_VERSIONS")
 
 def scalatest_repositories():
@@ -8,6 +8,5 @@ def scalatest_repositories():
 def scalatest_toolchain():
     for scala_version in SCALA_VERSIONS:
         native.register_toolchains(str(Label(
-            "//testing:scalatest_toolchain" +
-            version_suffix(scala_version),
+            "//testing:scalatest_toolchain" + version_suffix(scala_version),
         )))
diff --git a/testing/specs2_junit.bzl b/testing/specs2_junit.bzl
index a7da792d8..eed731317 100644
--- a/testing/specs2_junit.bzl
+++ b/testing/specs2_junit.bzl
@@ -1,7 +1,12 @@
+load("//scala:scala_cross_version.bzl", "version_suffix")
 load("//specs2:specs2_junit.bzl", _repositories = "specs2_junit_repositories")
+load("@io_bazel_rules_scala_config//:config.bzl", "SCALA_VERSIONS")
 
 def specs2_junit_repositories():
     _repositories()
 
 def specs2_junit_toolchain():
-    native.register_toolchains("@io_bazel_rules_scala//testing:specs2_junit_toolchain")
+    for scala_version in SCALA_VERSIONS:
+        native.register_toolchains(str(Label(
+            "//testing:specs2_junit_toolchain" + version_suffix(scala_version),
+        )))