diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3220e44b63b7940a4f825f1c99634375d9fc7d6a..ea9808021e322e6e649059fb7dd3344d437603e5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@ Python 3.5 POCL:
   script:
   - export PY_EXE=python3.5
   - export PYOPENCL_TEST=portable
-  - export EXTRA_INSTALL="numpy mako"
+  - export EXTRA_INSTALL="pybind11 numpy mako"
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
   - ". ./build-and-test-py-project.sh"
   tags:
@@ -16,7 +16,7 @@ Python 3.6 POCL:
   script:
   - export PY_EXE=python3.6
   - export PYOPENCL_TEST=portable
-  - export EXTRA_INSTALL="numpy mako"
+  - export EXTRA_INSTALL="pybind11 numpy mako"
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
   - ". ./build-and-test-py-project.sh"
   tags:
@@ -30,7 +30,7 @@ Python 3.6 POCL Examples:
   script:
   - export PY_EXE=python3.6
   - export PYOPENCL_TEST=portable
-  - export EXTRA_INSTALL="numpy mako pyvisfile matplotlib"
+  - export EXTRA_INSTALL="pybind11 numpy mako pyvisfile matplotlib"
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-py-project-and-run-examples.sh
   - ". ./build-py-project-and-run-examples.sh"
   tags:
@@ -57,7 +57,7 @@ Python 2.7 POCL:
   script:
   - export PY_EXE=python2.7
   - export PYOPENCL_TEST=portable
-  - export EXTRA_INSTALL="numpy mako"
+  - export EXTRA_INSTALL="pybind11 numpy mako"
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
   - ". ./build-and-test-py-project.sh"
   tags:
@@ -84,7 +84,7 @@ Python 3.6 Conda Apple:
 
 Documentation:
   script:
-  - EXTRA_INSTALL="numpy mako"
+  - EXTRA_INSTALL="pybind11 numpy mako"
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-docs.sh
   - ". ./build-docs.sh"
   tags: