diff --git a/skimage/color/tests/test_colorconv.py b/skimage/color/tests/test_colorconv.py
index 4bc01e78..bbc1c61b 100644
--- a/skimage/color/tests/test_colorconv.py
+++ b/skimage/color/tests/test_colorconv.py
@@ -43,6 +43,8 @@ from skimage import data_dir, data
 
 import colorsys
 
+np.random.seed(0)
+
 
 def test_guess_spatial_dimensions():
     im1 = np.zeros((5, 5))
diff --git a/skimage/feature/tests/test_censure.py b/skimage/feature/tests/test_censure.py
index 53c1c59b..6a4aed9c 100644
--- a/skimage/feature/tests/test_censure.py
+++ b/skimage/feature/tests/test_censure.py
@@ -5,6 +5,7 @@ from skimage.feature import CENSURE
 
 
 img = moon()
+np.random.seed(0)
 
 
 def test_censure_on_rectangular_images():
diff --git a/skimage/filter/rank/tests/test_rank.py b/skimage/filter/rank/tests/test_rank.py
index 72f9afe6..d8122ba7 100644
--- a/skimage/filter/rank/tests/test_rank.py
+++ b/skimage/filter/rank/tests/test_rank.py
@@ -6,6 +6,8 @@ from skimage import data, util
 from skimage.morphology import cmorph, disk
 from skimage.filter import rank
 
+np.random.seed(0)
+
 
 def test_random_sizes():
     # make sure the size is not a problem
diff --git a/skimage/io/tests/test_freeimage.py b/skimage/io/tests/test_freeimage.py
index 4e64bd16..dd34828f 100644
--- a/skimage/io/tests/test_freeimage.py
+++ b/skimage/io/tests/test_freeimage.py
@@ -14,6 +14,8 @@ try:
 except RuntimeError:
     FI_available = False
 
+np.random.seed(0)
+
 
 def setup_module(self):
     """The effect of the `plugin.use` call may be overridden by later imports.
diff --git a/skimage/io/tests/test_imread.py b/skimage/io/tests/test_imread.py
index 206b800d..b4886970 100644
--- a/skimage/io/tests/test_imread.py
+++ b/skimage/io/tests/test_imread.py
@@ -16,6 +16,8 @@ except ImportError:
 else:
     imread_available = True
 
+np.random.seed(0)
+
 
 def teardown():
     reset_plugins()
diff --git a/skimage/io/tests/test_pil.py b/skimage/io/tests/test_pil.py
index 89147fd6..1b534aa5 100644
--- a/skimage/io/tests/test_pil.py
+++ b/skimage/io/tests/test_pil.py
@@ -21,6 +21,8 @@ except ImportError:
 else:
     PIL_available = True
 
+np.random.seed(0)
+
 
 def teardown():
     reset_plugins()
diff --git a/skimage/io/tests/test_plugin_util.py b/skimage/io/tests/test_plugin_util.py
index 41f28339..7b337a94 100644
--- a/skimage/io/tests/test_plugin_util.py
+++ b/skimage/io/tests/test_plugin_util.py
@@ -3,6 +3,8 @@ from skimage.io._plugins.util import prepare_for_display, WindowManager
 from numpy.testing import *
 import numpy as np
 
+np.random.seed(0)
+
 
 class TestPrepareForDisplay:
     def test_basic(self):
diff --git a/skimage/io/tests/test_simpleitk.py b/skimage/io/tests/test_simpleitk.py
index 89f7416f..51f94986 100644
--- a/skimage/io/tests/test_simpleitk.py
+++ b/skimage/io/tests/test_simpleitk.py
@@ -15,6 +15,8 @@ except ImportError:
 else:
     sitk_available = True
 
+np.random.seed(0)
+
 
 def teardown():
     reset_plugins()
diff --git a/skimage/io/tests/test_tifffile.py b/skimage/io/tests/test_tifffile.py
index 0f128bf1..00c7f41c 100644
--- a/skimage/io/tests/test_tifffile.py
+++ b/skimage/io/tests/test_tifffile.py
@@ -15,6 +15,8 @@ try:
 except ImportError:
     TF_available = False
 
+np.random.seed(0)
+
 
 def teardown():
     sio.reset_plugins()
diff --git a/skimage/morphology/tests/test_ccomp.py b/skimage/morphology/tests/test_ccomp.py
index e934a5b7..48c8a850 100644
--- a/skimage/morphology/tests/test_ccomp.py
+++ b/skimage/morphology/tests/test_ccomp.py
@@ -5,6 +5,9 @@ from skimage.morphology import label
 from warnings import catch_warnings
 from skimage._shared.utils import skimage_deprecation
 
+np.random.seed(0)
+
+
 class TestConnectedComponents:
     def setup(self):
         self.x = np.array([[0, 0, 3, 2, 1, 9],
diff --git a/skimage/transform/tests/test_integral.py b/skimage/transform/tests/test_integral.py
index 4a641e71..f3232512 100644
--- a/skimage/transform/tests/test_integral.py
+++ b/skimage/transform/tests/test_integral.py
@@ -5,6 +5,7 @@ from skimage.transform import integral_image, integrate
 
 x = (np.random.random((50, 50)) * 255).astype(np.uint8)
 s = integral_image(x)
+np.random.seed(0)
 
 
 def test_validity():
diff --git a/skimage/transform/tests/test_warps.py b/skimage/transform/tests/test_warps.py
index 07054ab7..66c867df 100644
--- a/skimage/transform/tests/test_warps.py
+++ b/skimage/transform/tests/test_warps.py
@@ -12,6 +12,9 @@ from skimage import transform as tf, data, img_as_float
 from skimage.color import rgb2gray
 
 
+np.random.seed(0)
+
+
 def test_warp_tform():
     x = np.zeros((5, 5), dtype=np.double)
     x[2, 2] = 1