diff --git a/package/ci/circleci.yml b/package/ci/circleci.yml
index 7092116..34172f2 100644
--- a/package/ci/circleci.yml
+++ b/package/ci/circleci.yml
@@ -166,6 +166,8 @@ jobs:
       CMAKE_CXX_FLAGS: --coverage
       LCOV_EXTRA_OPTS: --gcov-tool /usr/bin/gcov-4.8
       PLATFORM_GL_API: GLX
+      # It crashes (OOM, probably) with the default setting
+      NINJA_JOBS: -j2
     steps:
     - install-base-linux:
         extra: libgl1-mesa-dev libsdl2-dev libglfw3-dev
@@ -185,6 +187,8 @@ jobs:
       PLATFORM_GL_API: EGL
       # STUPID yml interprets unquoted ON as a boolean
       TARGET_GLES2: "ON"
+      # It crashes (OOM, probably) with the default setting
+      NINJA_JOBS: -j2
     steps:
     - install-base-linux:
         extra: libsdl2-dev libglfw3-dev wget unzip
@@ -206,6 +210,8 @@ jobs:
       PLATFORM_GL_API: EGL
       # STUPID yml interprets unquoted OFF as a boolean
       TARGET_GLES2: "OFF"
+      # It crashes (OOM, probably) with the default setting
+      NINJA_JOBS: -j2
     steps:
     - install-base-linux:
         extra: libsdl2-dev libglfw3-dev wget unzip
@@ -228,6 +234,8 @@ jobs:
       CMAKE_CXX_FLAGS: --coverage
       LCOV_EXTRA_OPTS: --gcov-tool /usr/bin/gcov-4.8
       PLATFORM_GL_API: GLX
+      # It crashes (OOM, probably) with the default setting
+      NINJA_JOBS: -j2
     steps:
     - install-base-linux:
         extra: libsdl2-dev libglfw3-dev
diff --git a/package/ci/unix-desktop-gles.sh b/package/ci/unix-desktop-gles.sh
index fe68707..514c92c 100755
--- a/package/ci/unix-desktop-gles.sh
+++ b/package/ci/unix-desktop-gles.sh
@@ -75,7 +75,7 @@ cmake .. \
     -DWITH_PYTHON=ON \
     -DBUILD_TESTS=ON \
     -G Ninja
-ninja
+ninja $NINJA_JOBS
 
 CORRADE_TEST_COLOR=ON ctest -V
 
diff --git a/package/ci/unix-desktop.sh b/package/ci/unix-desktop.sh
index 63c9330..0ca9315 100755
--- a/package/ci/unix-desktop.sh
+++ b/package/ci/unix-desktop.sh
@@ -81,7 +81,7 @@ cmake .. \
     -DWITH_PYTHON=ON \
     -DBUILD_TESTS=ON \
     -G Ninja
-ninja
+ninja $NINJA_JOBS
 
 CORRADE_TEST_COLOR=ON ctest -V