diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 3741cd3d..a8195152 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -36,7 +36,7 @@ jobs:
 
     - name: install dependencies
       shell: bash -l {0}
-      run: mamba install 'sourmash>=4.8.3,<5' rust git compilers maturin pytest pandas
+      run: mamba install rust git compilers maturin pytest pandas
 
     - name: build
       shell: bash -l {0}