diff --git a/16.0.Dockerfile b/16.0.Dockerfile
index 3a32cea6..4eef97c0 100644
--- a/16.0.Dockerfile
+++ b/16.0.Dockerfile
@@ -152,7 +152,7 @@ RUN build_deps=" \
         click-odoo-contrib \
         debugpy \
         pydevd-odoo \
-        git+https://github.com/mailgun/flanker.git@v0.9.15#egg=flanker[validator] \
+        "flanker[validator] @ git+https://github.com/mailgun/flanker.git@v0.9.15" \
         geoip2 \
         "git-aggregator==4.0" \
         inotify \
diff --git a/17.0.Dockerfile b/17.0.Dockerfile
index 2d50f2a3..b369d852 100644
--- a/17.0.Dockerfile
+++ b/17.0.Dockerfile
@@ -151,7 +151,7 @@ RUN build_deps=" \
         click-odoo-contrib \
         debugpy \
         pydevd-odoo \
-        git+https://github.com/mailgun/flanker.git@v0.9.15#egg=flanker[validator] \
+        "flanker[validator] @ git+https://github.com/mailgun/flanker.git@v0.9.15" \
         geoip2 \
         "git-aggregator==4.0" \
         inotify \
diff --git a/18.0.Dockerfile b/18.0.Dockerfile
index 9cf13c18..5b9ed353 100644
--- a/18.0.Dockerfile
+++ b/18.0.Dockerfile
@@ -151,7 +151,7 @@ RUN build_deps=" \
         click-odoo-contrib \
         debugpy \
         pydevd-odoo \
-        git+https://github.com/mailgun/flanker.git@v0.9.15#egg=flanker[validator] \
+        "flanker[validator] @ git+https://github.com/mailgun/flanker.git@v0.9.15" \
         geoip2 \
         "git-aggregator==4.0" \
         inotify \
diff --git a/19.0.Dockerfile b/19.0.Dockerfile
index d41e1c12..f5898462 100644
--- a/19.0.Dockerfile
+++ b/19.0.Dockerfile
@@ -151,7 +151,7 @@ RUN build_deps=" \
         click-odoo-contrib \
         debugpy \
         pydevd-odoo \
-        git+https://github.com/mailgun/flanker.git@v0.9.15#egg=flanker[validator] \
+        "flanker[validator] @ git+https://github.com/mailgun/flanker.git@v0.9.15" \
         geoip2 \
         "git-aggregator==4.0" \
         inotify \