diff --git a/packages/fiat-p256/fiat-p256.0.2.1/opam b/packages/fiat-p256/fiat-p256.0.2.1/opam
index 19ccc81857d..bda9ca99596 100644
--- a/packages/fiat-p256/fiat-p256.0.2.1/opam
+++ b/packages/fiat-p256/fiat-p256.0.2.1/opam
@@ -34,8 +34,8 @@ depends: [
   "cstruct" {>= "3.5.0" & < "6.1.0"}
   "dune" {>= "1.10.0"}
   "dune-configurator"
-  "eqaf" {>= "0.5"}
-  "hex"
+  "eqaf" {>= "0.7" & < "0.10"}
+  "hex" {>= "1.4.0"}
   "ppx_deriving_yojson" {with-test}
   "rresult" {with-test}
   "stdlib-shims" {with-test}
diff --git a/packages/fiat-p256/fiat-p256.0.2.2/opam b/packages/fiat-p256/fiat-p256.0.2.2/opam
index e92f9a71271..7a5f1b2581b 100644
--- a/packages/fiat-p256/fiat-p256.0.2.2/opam
+++ b/packages/fiat-p256/fiat-p256.0.2.2/opam
@@ -27,8 +27,8 @@ depends: [
   "bigarray-compat"
   "cstruct" {>= "3.5.0" & < "6.1.0"}
   "dune-configurator"
-  "eqaf" {>= "0.5"}
-  "hex"
+  "eqaf" {>= "0.7" & < "0.10"}
+  "hex" {>= "1.4.0"}
   "conf-pkg-config" {build}
   "ppx_deriving_yojson" {with-test}
   "rresult" {with-test}
diff --git a/packages/fiat-p256/fiat-p256.0.2.3/opam b/packages/fiat-p256/fiat-p256.0.2.3/opam
index ad9c45e05de..b11b56aeb1e 100644
--- a/packages/fiat-p256/fiat-p256.0.2.3/opam
+++ b/packages/fiat-p256/fiat-p256.0.2.3/opam
@@ -27,8 +27,8 @@ depends: [
   "bigarray-compat"
   "cstruct" {>= "3.5.0" & < "6.1.0"}
   "dune-configurator"
-  "eqaf" {>= "0.5"}
-  "hex"
+  "eqaf" {>= "0.7" & < "0.10"}
+  "hex" {>= "1.4.0"}
   "conf-pkg-config" {build}
   "ppx_deriving_yojson" {with-test}
   "rresult" {with-test}
diff --git a/packages/mirage-crypto/mirage-crypto.0.10.0/opam b/packages/mirage-crypto/mirage-crypto.0.10.0/opam
index 9e7ee6f6e04..70b15aa5f93 100644
--- a/packages/mirage-crypto/mirage-crypto.0.10.0/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.10.0/opam
@@ -19,7 +19,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
   "bigarray-compat" # required to get eqaf.cstruct
 ]
 depopts: [
diff --git a/packages/mirage-crypto/mirage-crypto.0.10.1/opam b/packages/mirage-crypto/mirage-crypto.0.10.1/opam
index 836bb6cde2c..77dc31fb6df 100644
--- a/packages/mirage-crypto/mirage-crypto.0.10.1/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.10.1/opam
@@ -19,7 +19,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
   "bigarray-compat" # required to get eqaf.cstruct
 ]
 depopts: [
diff --git a/packages/mirage-crypto/mirage-crypto.0.10.2/opam b/packages/mirage-crypto/mirage-crypto.0.10.2/opam
index df434ccfb02..e53dbfe54eb 100644
--- a/packages/mirage-crypto/mirage-crypto.0.10.2/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.10.2/opam
@@ -19,7 +19,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
   "bigarray-compat" # required to get eqaf.cstruct
 ]
 depopts: [
diff --git a/packages/mirage-crypto/mirage-crypto.0.10.3/opam b/packages/mirage-crypto/mirage-crypto.0.10.3/opam
index e98a084d732..9b2271dc7fc 100644
--- a/packages/mirage-crypto/mirage-crypto.0.10.3/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.10.3/opam
@@ -19,7 +19,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
   "bigarray-compat" # required to get eqaf.cstruct
 ]
 depopts: [
@@ -42,4 +42,4 @@ url {
     "sha512=eb0d5a947649d6d9d55b8f5d5ea624e7b2b969baf7b855bf86b46cfadf9312e42e9caea479eb9c364a3c9cd4b3aa56f3a6a1b0cc20e022fdbd82bdb722df1198"
   ]
 }
-available: arch != "arm32"
\ No newline at end of file
+available: arch != "arm32"
diff --git a/packages/mirage-crypto/mirage-crypto.0.10.4/opam b/packages/mirage-crypto/mirage-crypto.0.10.4/opam
index 36f836c102b..6704cf886e7 100644
--- a/packages/mirage-crypto/mirage-crypto.0.10.4/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.10.4/opam
@@ -19,7 +19,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit" {with-test}
   "cstruct" {>="6.0.0"}
-  "eqaf" {>= "0.8"}
+  "eqaf" {>= "0.8" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.10.5/opam b/packages/mirage-crypto/mirage-crypto.0.10.5/opam
index 2e92db7fec2..cc59bc89782 100644
--- a/packages/mirage-crypto/mirage-crypto.0.10.5/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.10.5/opam
@@ -19,7 +19,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit" {with-test}
   "cstruct" {>="6.0.0"}
-  "eqaf" {>= "0.8"}
+  "eqaf" {>= "0.8" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.10.6/opam b/packages/mirage-crypto/mirage-crypto.0.10.6/opam
index a484ca7bdc6..1f0c30e9471 100644
--- a/packages/mirage-crypto/mirage-crypto.0.10.6/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.10.6/opam
@@ -19,7 +19,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit2" {with-test}
   "cstruct" {>="6.0.0"}
-  "eqaf" {>= "0.8"}
+  "eqaf" {>= "0.8" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.10.7/opam b/packages/mirage-crypto/mirage-crypto.0.10.7/opam
index fe5e2cfb79d..0334ec99347 100644
--- a/packages/mirage-crypto/mirage-crypto.0.10.7/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.10.7/opam
@@ -19,7 +19,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit2" {with-test}
   "cstruct" {>="6.0.0"}
-  "eqaf" {>= "0.8"}
+  "eqaf" {>= "0.8" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.11.0/opam b/packages/mirage-crypto/mirage-crypto.0.11.0/opam
index bd2639daecf..8af93107a77 100644
--- a/packages/mirage-crypto/mirage-crypto.0.11.0/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.11.0/opam
@@ -18,7 +18,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit2" {with-test}
   "cstruct" {>="6.0.0"}
-  "eqaf" {>= "0.8"}
+  "eqaf" {>= "0.8" & < "0.10"}
 ]
 conflicts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.11.1/opam b/packages/mirage-crypto/mirage-crypto.0.11.1/opam
index 66acf6141f3..3334a1ae770 100644
--- a/packages/mirage-crypto/mirage-crypto.0.11.1/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.11.1/opam
@@ -18,7 +18,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit2" {with-test}
   "cstruct" {>="6.0.0"}
-  "eqaf" {>= "0.8"}
+  "eqaf" {>= "0.8" & < "0.10"}
 ]
 conflicts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.11.2/opam b/packages/mirage-crypto/mirage-crypto.0.11.2/opam
index a889d7440f1..960b5dc54d1 100644
--- a/packages/mirage-crypto/mirage-crypto.0.11.2/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.11.2/opam
@@ -18,7 +18,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit2" {with-test}
   "cstruct" {>="6.0.0"}
-  "eqaf" {>= "0.8"}
+  "eqaf" {>= "0.8" & < "0.10"}
 ]
 conflicts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.11.3/opam b/packages/mirage-crypto/mirage-crypto.0.11.3/opam
index a61cd19df5e..458acae6d98 100644
--- a/packages/mirage-crypto/mirage-crypto.0.11.3/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.11.3/opam
@@ -18,7 +18,7 @@ depends: [
   "dune-configurator" {>= "2.0.0"}
   "ounit2" {with-test}
   "cstruct" {>="6.0.0"}
-  "eqaf" {>= "0.8"}
+  "eqaf" {>= "0.8" & < "0.10"}
 ]
 conflicts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.1/opam b/packages/mirage-crypto/mirage-crypto.0.8.1/opam
index eb08199e01f..64b57bef09f 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.1/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.1/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "mirage-xen-posix"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.10/opam b/packages/mirage-crypto/mirage-crypto.0.8.10/opam
index 9fe2545e7fc..f5637c5e061 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.10/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.10/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>= "3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.2/opam b/packages/mirage-crypto/mirage-crypto.0.8.2/opam
index 37abc13a274..2021a174735 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.2/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.2/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "mirage-xen-posix"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.3/opam b/packages/mirage-crypto/mirage-crypto.0.8.3/opam
index 7e23289b6de..4e3b3a08116 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.3/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.3/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "mirage-xen-posix"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.4/opam b/packages/mirage-crypto/mirage-crypto.0.8.4/opam
index e7e2edbbc19..2117bf5c654 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.4/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.4/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "mirage-xen-posix"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.5/opam b/packages/mirage-crypto/mirage-crypto.0.8.5/opam
index 1d94725b98a..bedffb36b40 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.5/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.5/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "mirage-xen-posix"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.6/opam b/packages/mirage-crypto/mirage-crypto.0.8.6/opam
index be4ac54522a..f1ec0a7e8fc 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.6/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.6/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.7/opam b/packages/mirage-crypto/mirage-crypto.0.8.7/opam
index c199278085e..68404dda505 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.7/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.7/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.8/opam b/packages/mirage-crypto/mirage-crypto.0.8.8/opam
index 5d07502965c..2a7d55b63c5 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.8/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.8/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.8.9/opam b/packages/mirage-crypto/mirage-crypto.0.8.9/opam
index 60098974a0f..4a3b8420433 100644
--- a/packages/mirage-crypto/mirage-crypto.0.8.9/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.8.9/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.9.0/opam b/packages/mirage-crypto/mirage-crypto.0.9.0/opam
index bc369186af9..65c6ddbf35b 100644
--- a/packages/mirage-crypto/mirage-crypto.0.9.0/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.9.0/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.9.1/opam b/packages/mirage-crypto/mirage-crypto.0.9.1/opam
index 88002b0fed1..67d99536c43 100644
--- a/packages/mirage-crypto/mirage-crypto.0.9.1/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.9.1/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"
diff --git a/packages/mirage-crypto/mirage-crypto.0.9.2/opam b/packages/mirage-crypto/mirage-crypto.0.9.2/opam
index 3ed14156195..dbe10f6526c 100644
--- a/packages/mirage-crypto/mirage-crypto.0.9.2/opam
+++ b/packages/mirage-crypto/mirage-crypto.0.9.2/opam
@@ -20,7 +20,7 @@ depends: [
   "ounit" {with-test}
   "cstruct" {>="3.2.0" & < "6.1.0"}
   "bigarray-compat" # required to get eqaf.cstruct
-  "eqaf" {>= "0.7"}
+  "eqaf" {>= "0.7" & < "0.10"}
 ]
 depopts: [
   "ocaml-freestanding"