diff --git a/debian/control b/debian/control
index feb66b6..f57f0d0 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,7 @@ Section: net
 Priority: optional
 Build-Depends:
  debhelper,
- golang-1.21-go
+ golang-1.19-go
 Standards-Version: 4.4.1
 Vcs-Browser: https://git.euclide.org/euclide/pdns-auth-proxy
 Vcs-Git: https://git.euclide.org/euclide/pdns-auth-proxy.git
diff --git a/go.mod b/go.mod
index 63ca02d..09b715c 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module git.euclide.org/euclide/pdns-auth-proxy
 
-go 1.21.1
+go 1.19
 
 require (
 	github.com/go-ldap/ldap/v3 v3.4.6
diff --git a/go.sum b/go.sum
index a81cb14..dd26bcf 100644
--- a/go.sum
+++ b/go.sum
@@ -14,7 +14,6 @@ github.com/google/uuid v1.3.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/jarcoal/httpmock v1.3.1 h1:iUx3whfZWVf3jT01hQTO/Eo5sAYtB2/rqaUuOtpInww=
 github.com/jarcoal/httpmock v1.3.1/go.mod h1:3yb8rc4BI7TCBhFY8ng0gjuLKJNquuDNiPaZjnENuYg=
 github.com/maxatome/go-testdeep v1.12.0 h1:Ql7Go8Tg0C1D/uMMX59LAoYK7LffeJQ6X2T04nTH68g=
-github.com/maxatome/go-testdeep v1.12.0/go.mod h1:lPZc/HAcJMP92l7yI6TRz1aZN5URwUBUAfUNvrclaNM=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pyke369/golang-support v0.0.0-20231112163947-ff7c18596096 h1:Nyi3FoyXqAre6ciqcG5to+hbu145HdYEQljA0lznr/U=