diff --git a/test-requirements.txt b/test-requirements.txt
index 7461634e..5e0f5233 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,3 +1,8 @@
+# Radon requires colorama<0.4, but many other tools listed here will
+# install a later version, so when pip tries to install radon it will
+# ignore the dependency version difference and only fail when the
+# bear is loaded.
+colorama<0.4
 # coverage 4.4.2 broke compatibility with coverage-config-reload-plugin
 # and thus broke https://github.com/jayvdb/coverage_env_plugin .
 # See https://github.com/jayvdb/coverage_config_reload_plugin/issues/1
@@ -5,7 +10,7 @@ coverage==4.4.1
 coverage-env-plugin~=0.1
 coverage-config-reload-plugin~=0.2
 codecov~=2.0.5
-moban~=0.2.4
+moban~=0.3.3
 packaging~=16.8
 pytest~=3.6.1
 pytest-cov~=2.4
@@ -21,6 +26,7 @@ pytest-timeout~=1.3.0
 pytest-travis-fold~=1.3.0
 pytest-xdist~=1.15
 requests-mock~=1.2
+ipdb~=0.11
 pip<10
 wheel~=0.29
 git+https://github.com/coala/coala.git