diff --git a/.circleci/config.yml b/.circleci/config.yml
index d2a6659..cb21c52 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -44,9 +44,10 @@ jobs:
       - run:
           name: Install llvmlite
           command: |
+            sudo apt-get install lsb-release wget software-properties-common
             wget https://apt.llvm.org/llvm.sh
             chmod +x llvm.sh
-            sudo ./llvm.sh 11
+            sudo ./llvm.sh 10
 
       - run:
           name: Install standard libraries
diff --git a/.travis.yml b/.travis.yml
index 98e6f9c..432d624 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,7 @@ before_install:
     - sudo apt-get install libgeos-dev libproj-dev proj-data graphviz libblas-dev liblapack-dev
     - wget https://apt.llvm.org/llvm.sh
     - chmod +x llvm.sh
-    - sudo ./llvm.sh 11
+    - sudo ./llvm.sh 10
 
 install:
     - pip install -r requirements.txt
diff --git a/appveyor.yml b/appveyor.yml
index 7542a04..7443929 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,9 +10,9 @@ init:
 
 install:
   - "%PYTHON%\\python -m pip install --upgrade pip"
-  - "%PYTHON%\\Scripts\\pip install pymyinstall"
+  - "%PYTHON%\\Scripts\\pip install pymyinstall numpy"
   - "%PYTHON%\\Scripts\\pymy_install3 cartopy pyproj shapely llvmlite numba"
-  - "%PYTHON%\\Scripts\\pip install -r requirements.txt --ignore-installed llvmlite"
+  - "%PYTHON%\\Scripts\\pip install -r requirements.txt"
 
 build: off