diff --git a/tests/unit/test_circuit_breaker_recovery.bats b/tests/unit/test_circuit_breaker_recovery.bats
index f3c69e5..5cae289 100644
--- a/tests/unit/test_circuit_breaker_recovery.bats
+++ b/tests/unit/test_circuit_breaker_recovery.bats
@@ -8,7 +8,7 @@ SCRIPT_DIR="${BATS_TEST_DIRNAME}/../../lib"
 
 setup() {
     # Create temp test directory
-    export TEST_TEMP_DIR="$(mktemp -d /tmp/ralph-cb-recovery.XXXXXX)"
+    export TEST_TEMP_DIR="$(mktemp -d)"
     cd "$TEST_TEMP_DIR"
 
     export RALPH_DIR=".ralph"
@@ -393,7 +393,7 @@ get_past_timestamp() {
 
     # Create minimal environment for CLI parsing
     local CLI_TEST_DIR
-    CLI_TEST_DIR="$(mktemp -d /tmp/ralph-cli-test.XXXXXX)"
+    CLI_TEST_DIR="$(mktemp -d)"
     cd "$CLI_TEST_DIR"
 
     git init > /dev/null 2>&1
diff --git a/tests/unit/test_exit_detection.bats b/tests/unit/test_exit_detection.bats
index b87e8e3..b43995a 100644
--- a/tests/unit/test_exit_detection.bats
+++ b/tests/unit/test_exit_detection.bats
@@ -15,7 +15,7 @@ setup() {
     export MAX_CONSECUTIVE_DONE_SIGNALS=2
 
     # Create temp test directory
-    export TEST_TEMP_DIR="$(mktemp -d /tmp/ralph-test.XXXXXX)"
+    export TEST_TEMP_DIR="$(mktemp -d)"
     cd "$TEST_TEMP_DIR"
     mkdir -p "$RALPH_DIR"
 
diff --git a/tests/unit/test_rate_limiting.bats b/tests/unit/test_rate_limiting.bats
index 7836ad5..c3bcb5b 100755
--- a/tests/unit/test_rate_limiting.bats
+++ b/tests/unit/test_rate_limiting.bats
@@ -15,7 +15,7 @@ setup() {
     export TIMESTAMP_FILE="$RALPH_DIR/.last_reset"
 
     # Create temp test directory
-    export TEST_TEMP_DIR="$(mktemp -d /tmp/ralph-test.XXXXXX)"
+    export TEST_TEMP_DIR="$(mktemp -d)"
     cd "$TEST_TEMP_DIR"
     mkdir -p "$RALPH_DIR"