diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index bc7f1a39..249b5a20 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -16,7 +16,6 @@ jobs:
           - ModelingToolkitSIExt
         version:
           - '<1.10.3 || >=1.10.4'
-          - '1.6'
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
diff --git a/Project.toml b/Project.toml
index 64a9d62b..baf6e7c1 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,7 +29,7 @@ Symbolics = "0c5d862f-8b57-4792-8d23-62f2024744c7"
 ModelingToolkitSIExt = ["ModelingToolkit", "SymbolicUtils", "Symbolics"]
 
 [compat]
-AbstractAlgebra = "0.40, 0.41, 0.42, 0.43, 0.44"
+AbstractAlgebra = "0.41, 0.42, 0.43, 0.44"
 Aqua = "0.8"
 CPUSummary = "0.2"
 Combinatorics = "1"
@@ -41,7 +41,7 @@ LinearAlgebra = "1.10, 1.11"
 Logging = "1.10, 1.11"
 MacroTools = "0.5"
 ModelingToolkit = "9.33"
-Nemo = "0.43, 0.44, 0.45, 0.46, 0.47, 0.48"
+Nemo = "0.45.4, 0.46, 0.47, 0.48"
 ParamPunPam = "0.5"
 Pkg = "1.10, 1.11"
 PrecompileTools = "1.2"