diff --git a/AB_environments/AB_baseline.conda.yaml b/AB_environments/AB_baseline.conda.yaml
index ec9668df24..b1382a493d 100644
--- a/AB_environments/AB_baseline.conda.yaml
+++ b/AB_environments/AB_baseline.conda.yaml
@@ -58,7 +58,7 @@ dependencies:
   - adlfs ==2024.7.0
   # https://github.com/coiled/benchmarks/issues/1616
   - cryptography ==44.0.0
-  - pyopenssl ==24.3.0
+  - pyopenssl ==24.2.1
   # End copy-paste
 
   - pip:
diff --git a/AB_environments/AB_sample.conda.yaml b/AB_environments/AB_sample.conda.yaml
index 70ab0cc982..f76f40d10f 100644
--- a/AB_environments/AB_sample.conda.yaml
+++ b/AB_environments/AB_sample.conda.yaml
@@ -64,7 +64,7 @@ dependencies:
   - adlfs ==2024.7.0
   # https://github.com/coiled/benchmarks/issues/1616
   - cryptography ==44.0.0
-  - pyopenssl ==24.3.0
+  - pyopenssl ==24.2.1
   # End copy-paste
 
   - pip:
diff --git a/ci/environment.yml b/ci/environment.yml
index 61759b2abc..b90701b8ba 100644
--- a/ci/environment.yml
+++ b/ci/environment.yml
@@ -59,7 +59,7 @@ dependencies:
   - adlfs ==2024.7.0
   # https://github.com/coiled/benchmarks/issues/1616
   - cryptography ==44.0.0
-  - pyopenssl ==24.3.0
+  - pyopenssl ==24.2.1
 
 ########################################################
 # PLEASE READ: