diff --git a/Makefile.toml b/Makefile.toml
index 3f36840ab73..ab6cabb7a84 100644
--- a/Makefile.toml
+++ b/Makefile.toml
@@ -167,6 +167,7 @@ dependencies = [
 [tasks.ci-job-msrv-features-1]
 description = "Run all tests for the CI 'msrv-features-1' job"
 category = "CI"
+env = { ICU4X_DATA_DIR = "../stubdata" }
 script_runner = "@duckscript"
 script = '''
 exec --fail-on-error rustup install 1.70 --profile minimal
@@ -176,6 +177,7 @@ exec --fail-on-error cargo +1.70 make check-all-features-chunked 1
 [tasks.ci-job-msrv-features-2]
 description = "Run all tests for the CI 'msrv-features-2' job"
 category = "CI"
+env = { ICU4X_DATA_DIR = "../stubdata" }
 script_runner = "@duckscript"
 script = '''
 exec --fail-on-error rustup install 1.70 --profile minimal
@@ -185,6 +187,7 @@ exec --fail-on-error cargo +1.70 make check-all-features-chunked 2
 [tasks.ci-job-msrv-features-3]
 description = "Run all tests for the CI 'msrv-features-3' job"
 category = "CI"
+env = { ICU4X_DATA_DIR = "../stubdata" }
 script_runner = "@duckscript"
 script = '''
 exec --fail-on-error rustup install 1.70 --profile minimal