diff --git a/Dockerfile.prod b/Dockerfile.prod
index 4e05025..d70e973 100644
--- a/Dockerfile.prod
+++ b/Dockerfile.prod
@@ -68,4 +68,4 @@ RUN sudo cp -a /tmp/riju/* /home/docker/src/ && rm -rf /tmp/riju
 
 WORKDIR /home/docker/src
 RUN sudo deluser docker sudo
-RUN RIJU_PRIVILEGED=1 CONCURRENCY=1 TIMEOUT_SECS=30 yarn test
+RUN RIJU_PRIVILEGED=1 CONCURRENCY=1 TIMEOUT_FACTOR=5 yarn test
diff --git a/README.md b/README.md
index ac6c4ad..5c437bf 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ additional layers. You can build it as follows:
 Lastly I should mention the tests. There are integration tests for
 every language, and they can be run as follows:
 
-    $ [CONCURRENCY=2] [TIMEOUT=5] yarn test [<filter>...]
+    $ [CONCURRENCY=2] [TIMEOUT_FACTOR=1] yarn test [<filter>...]
 
 Filters can be for language (`python`, `java`) or test type (`hello`,
 `lsp`). You can comma-delimit multiple filters to do a disjunction,
diff --git a/backend/src/test-runner.ts b/backend/src/test-runner.ts
index 0ab8b06..025667a 100644
--- a/backend/src/test-runner.ts
+++ b/backend/src/test-runner.ts
@@ -15,8 +15,9 @@ function parseIntOr(thing: any, def: number) {
   return Number.isNaN(num) ? def : num;
 }
 
-const TIMEOUT_SECS = parseIntOr(process.env.TIMEOUT_SECS, 5);
+const TIMEOUT_FACTOR = parseIntOr(process.env.TIMEOUT_FACTOR, 1);
 const CONCURRENCY = parseIntOr(process.env.CONCURRENCY, 2);
+const BASE_TIMEOUT_SECS = 5;
 
 function findPosition(str: string, idx: number) {
   const lines = str.substring(0, idx).split("\n");
@@ -103,7 +104,7 @@ class Test {
       timeout = setTimeout(() => {
         this.timedOut = true;
         this.handleUpdate();
-      }, (this.config.timeout || TIMEOUT_SECS) * 1000);
+      }, (this.config.timeout || BASE_TIMEOUT_SECS) * 1000 * TIMEOUT_FACTOR);
       await session.setup();
       switch (this.type) {
         case "ensure":