diff --git a/.travis.yml b/.travis.yml
index b347f73..86e5fbc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,14 +12,14 @@ language: c
 env:
   - BRANCH=0.19.6
   - BRANCH=0.20.2
-  - BRANCH=1.0.0
+  - BRANCH=1.0.4
   - BRANCH=devel
 
 cache:
   directories:
     - "$HOME/.choosenim/toolchains/nim-0.19.6"
     - "$HOME/.choosenim/toolchains/nim-0.20.2"
-    - "$HOME/.choosenim/toolchains/nim-1.0.0"
+    - "$HOME/.choosenim/toolchains/nim-1.0.4"
 
 install:
   - export CHOOSENIM_CHOOSE_VERSION=$BRANCH
diff --git a/appveyor.yml b/appveyor.yml
index 0d9ba77..7678cf1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -11,7 +11,7 @@ environment:
   matrix:
     - NIM_VERSION: 0.19.6
     - NIM_VERSION: 0.20.2
-    - NIM_VERSION: 1.0.0
+    - NIM_VERSION: 1.0.4
 
 for:
 -