diff --git a/taskcluster/test-darwin-opt-base.tyml b/taskcluster/test-darwin-opt-base.tyml
index 6502fe78..ae904a05 100644
--- a/taskcluster/test-darwin-opt-base.tyml
+++ b/taskcluster/test-darwin-opt-base.tyml
@@ -52,6 +52,7 @@ then:
             export TASKCLUSTER_TMP_DIR="$TASKCLUSTER_TASK_DIR/tmp" &&
             export LC_ALL=C &&
             export MACOSX_DEPLOYMENT_TARGET=10.10 &&
+            export PIP_DEFAULT_TIMEOUT=60 &&
             env &&
             git clone --quiet ${event.head.repo.url} $TASKCLUSTER_TASK_DIR/DeepSpeech/ds/ &&
             cd $TASKCLUSTER_TASK_DIR/DeepSpeech/ds && git checkout --quiet ${event.head.sha} &&
diff --git a/taskcluster/test-linux-opt-base.tyml b/taskcluster/test-linux-opt-base.tyml
index b48bfe89..18ffdd1e 100644
--- a/taskcluster/test-linux-opt-base.tyml
+++ b/taskcluster/test-linux-opt-base.tyml
@@ -46,6 +46,7 @@ then:
         DEEPSPEECH_TEST_MODEL: https://queue.taskcluster.net/v1/task/${training}/artifacts/public/output_graph.pb
         DEEPSPEECH_PROD_MODEL: https://s3.amazonaws.com/deep-speech/mmap/output_graph.pb
         DEEPSPEECH_PROD_MODEL_MMAP: https://s3.amazonaws.com/deep-speech/mmap/output_graph.pbmm
+        PIP_DEFAULT_TIMEOUT: 60
 
     command:
       - "/bin/bash"