diff --git a/test/case/all.yaml b/test/case/all.yaml
index 12edc8c2..70869445 100644
--- a/test/case/all.yaml
+++ b/test/case/all.yaml
@@ -1,4 +1,5 @@
 ---
+- case: meta/reproducible.py
 - case: meta/wait.py
 
 - name: Misc tests
diff --git a/test/case/meta/reproducible.py b/test/case/meta/reproducible.py
new file mode 100755
index 00000000..6e2ad565
--- /dev/null
+++ b/test/case/meta/reproducible.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+
+import os
+
+import infamy
+
+with infamy.Test() as test:
+    with test.step("$PYTHONHASHSEED is set"):
+        seed = os.environ.get("PYTHONHASHSEED")
+        if seed == None:
+            print("$PYTHONHASHSEED must be set in order to create a reproducible test environment")
+            test.fail()
+        else:
+            print(f"Specify PYTHONHASHSEED={seed} to reproduce this test environment")
+
+    test.succeed()
diff --git a/test/env b/test/env
index 72d95b59..06268372 100755
--- a/test/env
+++ b/test/env
@@ -157,6 +157,7 @@ if [ "$containerize" ]; then
 	 --cap-add=NET_RAW \
 	 --cap-add=NET_ADMIN \
 	 --device=/dev/net/tun \
+	 --env PYTHONHASHSEED=${PYTHONHASHSEED:-$(shuf -i 0-$(((1 << 32) - 1)) -n 1)} \
 	 --env VIRTUAL_ENV_DISABLE_PROMPT=yes \
 	 --env PROMPT_DIRTRIM="$ixdir" \
 	 --env PS1='\e[1m$(date "+%H:%M:%S") \h\e[0m:\W # ' \